郑州大学c语言实验报告册答案

1、实验一1、#includevoidmain()inta,b,c;scanf(%d,%d,%d,&a,&b,&c);printf(sum=%dn,a+b+c);2、#includevoidmain()inta,b,he,cha,ji,shang;scanf(%d,%d,&a,&b);he=a+b;cha=a-b;ji=a*b;shang=a/b;printf(he=%dn,he);printf(cha=%dn,cha);printf(ji=%dn,ji);printf(shang=%dn,shang);3、#includevoidmain()inta,b,c,d,e,sum;scanf(%d,%

2、d,%d,%d,%d,&a,&b,&c,&d,&e);sum=a*a+b*b+c*c+d*d+e*e;printf(sum=%dn,sum);4#includeincludevoidmain()doublea,b,c,sum;scanf(%lf,%lf,%lf,&a,&b,&c);sum=sqrt(a)+sqrt(b)+sqrt(c);printf(sum=%fn,sum);5、#include#definePI3.14159voidmain()floatr,l,s;printf(请输入圆半径(r):);scanf(%f,&r);l=2*PI*r;s=r*r*PI;printf(n圆周长l=%

3、6.2fn,l);printf(圆面积s=%6.2fn,s);6、#includevoidmain()printf(whatabeautifulcampus!n);printf(Iwishyoueverysuccess!n);实验二1、#includevoidmain()inta,b,c;floatx;scanf(a=%d,b=%d,c=%d,x=%f,&a,&b,&c,&x);printf(%f,a*x*x*x+b*x*x+c);2、#includevoidmain()inta,b;scanf(a=%d,b=%d,&a,&b);printf(ji=%d,shang=%d,yushu=%d,a

4、*b,a/b,a%b);3、#includevoidmain()floatc,f;printf(请输入一个华氏温度f:);scanf(%f,&f);c=5.0/9.0*(f-32);printf(n摄氏温度为:%5.2fn,c);4、#include#definePI3.14159voidmain()floatr,l,s;printf(请输入圆半径(r):);scanf(%f,&r);l=2*PI*r;s=r*r*PI;printf(n圆周长l=%6.2fn,l);printf(圆面积s=%6.2fn,s);5、#includevoidmain()floatc=3.123456789;prin

5、tf(%f,c);6、#includevoidmain()inta=2;a+=a;printf(%dn,a);a-=2;printf(%dn,a);a*=2+3;printf(%dn,a);a/=a+a;printf(%dn,a);实验三1、#includevoidmain()inta=3,b=4,c=5;floatx=1.414,y=1.732,z=2.712;printf(a=%-7db=%-7dc=%-7dnx=%-7.3fy=%-7.3fz=%-7.3f,a,b,c,x,y,z);2、#includevoidmain()inta,b,c;floatx,y,z;scanf(%d,&a);

6、scanf(%d,&b);scanf(%d,&c);scanf(%f,&x);scanf(%f,&y);scanf(%f,&z);printf(a=%d,b=%d,c=%dnx=%.3f,y=%.3f,z=%.3f,n,a,b,c,x,y,z);3、#includevoidmain()inta,b,c,x1,x2;scanf(%d,%d,%d,&a,&b,&c);x1=a+b+c;x2=a-b-c;printf(x1=a+b+c=%d+%d+%d=%dn,a,b,c,x1);printf(x2=a-b-c=%d-%d-%d=%dn,a,b,c,x2);4、#includevoidmain()c

7、harc1,c2,c3,c4;scanf(%c%c%c%c,&c1,&c2,&c3,&c4);printf(%d,%d,%d,%d,c1,c2,c3,c4);5、#includevoidmain()intd1=60,d2=61,d3=62,d4=63;printf(%c,%c,%c,%c,d1+5,d2+5,d3+5,d4+5);6、#includevoidmain()intm=12345678,n=3456789;printf(m=%dn=%d,m,n);7、#includevoidmain()inta=20,b=64,c=127;printf(a=%d,%o,%xn,a,a,a);prin

8、tf(b=%d,%o,%xn,b,b,b);printf(c=%d,%o,%xn,c,c,c);8、#includevoidmain()floatx,y,z;x=1.414;y=1.732;z=2.712;printf(%6.2f,%6.2f,%6.2f,x,y,z);9、#includevoidmain()printf(%.6f%,1.0/3);10、#includevoidmain()inta,b,a=getchar(b=getchar()c=getchar();a=a+32;b=b+32;c=c+32;putchar(a);putchar(b);putchar(c);实验四选择结构程序设

9、计1.有三个整数a,b,c,由键盘输入，输出其中最大的数。参考程序main()inta,b,c,max;printf(请输入a,b,c=);scanf(%d,%d,%d,&a,&b,&c);max=a;if(maxb)max=b;if(maxc)max=c;printf(n最大数max=%dn,max);2参看C程序设计第三版谭浩强第108页的例5.6.3有一函数：写一程序，输入x,输出y。main()floatx,y;printf(请输入x=);scanf(%f,&x);if(x1)y=x;elseif(x=90)r=A;elseif(s=80)r=B;elseif(s=70)r=C;els

10、eif(s=60)r=D;elser=E;printf(nscore=%dresult=%cn,s,r);参考程序2main()ints，i;charr;printf(请输入score=);scanf(%d,&s);i=(s-s%10)/10;switch(i)case10:case9:r=A;break;case8:r=B;break;case7:r=C;break;case6:r=D;break;default:r=E;printf(nscore=%dresult=%cn,s,r);5.企业发放奖金I根据利润提成，以下是提成办法：I=10万部分10%10I=20万部分7.5%20I=40万

11、部分5%40I=60万部分3%60I100万部分1%从键盘输入当月利润I，求应发奖金总数。要求：用if语句编程序；用switch语句编程序。参考程序main()floatb1,b2,b3,b4,b5,b6,I;printf(请输入本月利润:);scanf(%f,&I);b1=b2=b3=b4=b5=b6=0;if(I100)b6=(I-100)*0.01;b5=40*0.015;b4=20*0.03;b3=20*0.05;b2=10*0.075;b1=10*0.1;elseif(I60)b5=(I-60)*0.015;b4=20*0.03;b3=20*0.05;b2=10*0.075;b1=1

12、0*0.1;elseif(I40)b4=(I-40)*0.03;b3=20*0.05;b2=10*0.075;b1=10*0.1;elseif(I20)b3=(I-20)*0.05;b2=10*0.075;b1=10*0.1;elseif(I10)b2=(I-10)*0.075;b1=10*0.1;elseb1=I*0.1;printf(n本月利润I=%f万元;奖金b=%f万元n,I,b1+b2+b3+b4+b5+b6);参考程序main()floatb1,b2,b3,b4,b5,b6,I,B;printf(请输入本月利润:);scanf(%f,&I);B=0;b6=(I-100)*0.01;

13、b5=40*0.015;b4=20*0.03;b3=20*0.05;b2=10*0.075;b1=10*0.1;if(I100)B+=b1+b2+b3+b4+b5+b6;elseif(I60)B+=(I-60)*0.015+b4+b3+b2+b1;elseif(I40)B+=(I-40)*0.03+b3+b2+b1;elseif(I20)B+=(I-20)*0.05+b2+b1elseif(I10)B+=(I-10)*0.075+b1;elseB=I*0.1;printf(n本月利润I=%f万元;奖金B=%f万元n,I,B);参考程序3main()floatb1,b2,b3,b4,b5,b6,

14、I,B;intn;printf(请输入本月利润:);scanf(%f,&I);B=0;b6=(I-100)*0.01;b5=40*0.015;b4=20*0.03;b3=20*0.05;b2=10*0.075;b1=10*0.1;n=i/10;switch(n)case0:B=I+0.1;break;case1:B+=(I-10)*0.075+b1;break;case2:case3:B+=(I-20)*0.05+b2+b1;break;case4:case5:B+=(I-40)*0.03+b3+b2+b1;break;case6:case7:case8:case9:B+=(I-60)*0.0

15、15+b4+b3+b2+b1;break;case10:default:B+=b1+b2+b3+b4+b5+b6;printf(n本月利润I=%f万元;奖金B=%f万元n,I,B);6给一个不多于5位的正整数，要求：求出它是几位数；分别打印出每一位数字；按逆序打main()intn1,n2,n3,n4,n5,n;longnum;printf(请输入0-99999之间的一个数:);scanf(%ld,&num);if(num9999)n=5;elseif(num999)n=4;elseif(num99)n=3;elseif(num9)n=2;elsen=1;n3=num/100%10;/*取百位

16、*/n4=num/10%10;/*取十位*/n5=num%10;/*取个位*/printf(n原数据num=%ldn,num);printf(反序数为:);switch(n)case1:printf(%dn,n5);break;case2:printf(%d%dn,n5,n4);break;case3:printf(%d%d%dn,n5,n4,n3);break;case4:printf(%d%d%d%dn,n5,n4,n3,n2);break;case5:printf(%d%d%d%d%dn,n5,n4,n3,n2,n1);break;for(k=1;k=9;k+)for(m=1;m=k;k

17、+)printf(%d*%d=%-2d,m,k,m*k);printf(n);3、main()inti,j;for(i=1;i5;i+)for(j=1;j=40-i;j+)printf();for(j=1;j0;i-)for(j=1;j=40-i;j+)printf();for(j=1;j=2*i-1;j+)printf(*);printf(n);4、main()intx,y,z;printf(n大公鸡母鸡雏鸡);for(x=0;x20;x+)for(y=0;y34;y+)z=100-x-y;if(z%3!=0)continue;if(5*x+3*y+z/3=100)printf(n%8d%8

18、d%8d,x,y,z);5、main()longs=0,sn=0;intk,n;printf(nInputn=);scanf(%d,&n);for(k=1;k=n;k+)sn=sn+k;s=s+sn;printf(nn=%d;s=%ldn,n,s);实验七数组（一）1、用随机函数产生15个100以内的随机整数存入一维数组，然后分三行输出，每行3个数。#includevoidmain()inta15,i;for(i=0;i15;i+)ai=rand();/*产生-9032767之间的随机整数*/if(ai0)ai=-ai;ai=ai%101;if(i%5=0)printf(n);printf(%

19、8d,ai);2、求出n个学生一门课程中的最高成绩和最低成绩及高于平均成绩的人数。#defineN10voidmain()floataN=78,86,65,55,91,83,78,90,69,81;floatmax=0,min=100,avg=0;inti,num=0;for(i=0;imax)max=ai;if(aimin)min=ai;avg=avg+ai;avg=avg/N;for(i=0;iavg)num+;printf(nmax=%.2f,min=%.2fn,max,min);printf(n%.2f=%dn,avg,num);3、使用数组,求出下列数列的前20项:1,1,2,4,7

20、,13,voidmain()longa20=1,1,2;inti;for(i=3;i20;i+)ai=ai-1+ai-2+ai-3;for(i=0;i20;i+)if(i%5=0)printf(n);printf(%9ld,ai);4、将一个一维数组反序放置如:a=67,89,76,98.66反序放置后a=66,98,76,8967#defineN5voidmain()intaN=67,89,76,98,66,i,k;for(i=0;iN/2;i+)k=ai;ai=aN-i-1;aN-i-1=k;printf(na=%d,a0);for(i=1;iN;i+)printf(,%d,ai);pri

21、ntf(n);5、有10个学生一门课程成绩,使用选择排序法将成绩由高向低排序.#defineN10voidmain()intaN=67,89,76,98,66,55,77,79,96,89;inti,j,p,k;for(i=0;iN-1;i+)p=i;for(j=i+1;jN;j+)if(apaj)p=j;if(p!=i)k=ai;ai=ap;ap=k;for(i=0;iN;i+)printf(%4d,ai);实验七数组（二）1、将一个一维数组a9中各元素值按行的顺序放入二维数组b33中。voidmain()inta9=1,2,3,4,5,6,7,8,9,b33,i,j,k=0;for(i=0

22、;i3;i+)for(j=0;j3;j+)bij=ak+;printf(%8d,bij);printf(n);2、有一mn矩阵,各元素由随机数产生,将矩阵增加一列,求矩阵每一行的元素值之和,并将它放入增加列.#include#definem3#definen4voidmain()longa?n+1;inti,j;for(i=0;im;i+)ain=0;for(j=0;jn;j+)aij=rand();ain=ain+aij;printf(%8ld,aij);printf(%8ldn,ain);3、有一mn矩阵,找出最大元素值及其所在的行、列位置。#include#definem3#define

23、n4main()longa?n;inti,j,row=0,col=0;for(i=0;im;i+)for(j=0;jn;j+)aij=rand();printf(%8ld,aij);if(arowcolaij)row=i;col=j;printf(n);printf(nmax=%ldrow=%dcol=%dn,arowcol,row+1,col+1);4、有n个考生，每个考生有考号和总分成绩，如果录取m人，确定录取分数线并输出被录取考生的考号和成绩。voidmain()floata1002,temp,temp1;inti,j,p,n;printf(ninputnumberofstudentn=

24、);scanf(%d,&n);for(i=0;in;i+)printf(ninputnum,scoreof%dthstudent:,i+1);scanf(%f,%f,&temp1,&temp);ai0=temp1;ai1=temp;for(i=0;in-1;i+)p=i;for(j=i+1;jn;j+)if(ap1aj1)p=j;if(p!=i)temp=ap1;ap1=ai1;ai1=temp;temp=ap0;ap0=ai0;ai0=temp;printf(ninputadmittablenumber:);scanf(%d,&p);printf(noutputnamelist:n);for

25、(i=0;ip;i+)printf(%10.0f%10.1fn,ai0,ai1);5、将矩阵m(n,n)对角线上的元素置为1，他置0.#definen10voidmain()intann=0,i,j;for(i=0;in;i+)aii=1;ain-1-i=1;for(j=0;jn;j+)printf(%4d,aij);printf(n);实验十四文件1、打开开始-程序-附件-记事本输入：1001zhangsan7890891002lisi9988771003wangwu8976551004zhaoliu535544存在e盘根目录下，文件名为chengji2、#include#include#d

26、efineN5main()FILE*fp;intnum,sc1,sc2,sc3,score,i;charname10;回复if(fp=fopen(e:chengji.txt,r)=NULL)printf(Error);exit(0);for(i=1;i=N;i+)fscanf(fp,%d%s%d%d%dn,&num,name,&sc1,&sc2,&sc3);score=sc1+sc2+sc3;printf(%6d%10s%6d%6d%6d%6dn,num,name,sc1,sc2,sc3,score/3);fclose(fp);3、#include#include#defineN5struct

27、studentintnum;charname10;intscore;chardianhua10;main()FILE*fp;inti;structstudentstuN;clrscr();if(fp=fopen(e:xuesheng.txt,w)=NULL)printf(Error);exit(0);for(i=0;iN;i+)scanf(%d%s%d%s,&stui.num,,&stui.score,stui.dianhua);fprintf(fp,%6d%10s%6d%10sn,stui.num,,stui.score,stui.dianhua);fcl

28、ose(fp);4、#include#include#defineN5structstudentintnum;charname10;intscore;chardianhua10;main()FILE*fp;inti,xuehao;structstudentstuN;clrscr();if(fp=fopen(e:xuesheng.txt,r)=NULL)printf(Error);exit(0);scanf(%d,&xuehao);for(i=0;iN;i+)fscanf(fp,%d%s%d%sn,&stui.num,,&stui.score,stui.dianhua);if(

29、stui.num=xuehao)printf(%6d%10s%6d%10sn,stui.num,,stui.score,stui.dianhua);fclose(fp);5、#include#includevoidmain()FILE*fp1,*fp2;charch;if(fp1=fopen(c:tcfile4.c,r)=NULL)/以读文本文件方式打开原有文件printf(Error);exit(0);if(fp2=fopen(c:tcfile5.c,w)=NULL)/以写文本文件方式打开目标文件printf(Error);exit(0);ch=fgetc(fp1);whi

30、le(ch!=EOF)fputc(ch,fp2);/把该字符写入目标磁盘文件ch=fgetc(fp1);/从原有磁盘文件中读一个字符fclose(fp1);fclose(fp2);6、#include#include#include#defineN5voidmain()FILE*fp;intnum,jd1,jd2,jd3,jd4,jidu,i;实验一1、#includevoidmain()inta,b,c;scanf(%d,%d,%d,&a,&b,&c);printf(sum=%dn,a+b+c);2、#includevoidmain()inta,b,he,cha,ji,shang;scanf

31、(%d,%d,&a,&b);he=a+b;cha=a-b;ji=a*b;shang=a/b;printf(he=%dn,he);printf(cha=%dn,cha);printf(ji=%dn,ji);printf(shang=%dn,shang);3、#includevoidmain()inta,b,c,d,e,sum;scanf(%d,%d,%d,%d,%d,&a,&b,&c,&d,&e);sum=a*a+b*b+c*c+d*d+e*e;printf(sum=%dn,sum);4#includeincludevoidmain()doublea,b,c,sum;scanf(%lf,%lf,

32、%lf,&a,&b,&c);sum=sqrt(a)+sqrt(b)+sqrt(c);printf(sum=%fn,sum);5、#include#definePI3.14159voidmain()floatr,l,s;printf(请输入圆半径(r):);scanf(%f,&r);l=2*PI*r;s=r*r*PI;printf(n圆周长l=%6.2fn,l);printf(圆面积s=%6.2fn,s);6、#includevoidmain()printf(whatabeautifulcampus!n);printf(Iwishyoueverysuccess!n);实验二1、#includev

33、oidmain()inta,b,c;floatx;scanf(a=%d,b=%d,c=%d,x=%f,&a,&b,&c,&x);printf(%f,a*x*x*x+b*x*x+c);2、#includevoidmain()inta,b;scanf(a=%d,b=%d,&a,&b);printf(ji=%d,shang=%d,yushu=%d,a*b,a/b,a%b);3、#includevoidmain()floatc,f;printf(请输入一个华氏温度f:);scanf(%f,&f);c=5.0/9.0*(f-32);printf(n摄氏温度为:%5.2fn,c);4、#include#d

34、efinePI3.14159voidmain()floatr,l,s;printf(请输入圆半径(r):);scanf(%f,&r);l=2*PI*r;s=r*r*PI;printf(n圆周长l=%6.2fn,l);printf(圆面积s=%6.2fn,s);5、#includevoidmain()floatc=3.123456789;printf(%f,c);6、#includevoidmain()inta=2;a+=a;printf(%dn,a);a-=2;printf(%dn,a);a*=2+3;printf(%dn,a);a/=a+a;printf(%dn,a);实验三1、#inclu

35、devoidmain()inta=3,b=4,c=5;floatx=1.414,y=1.732,z=2.712;printf(a=%-7db=%-7dc=%-7dnx=%-7.3fy=%-7.3fz=%-7.3f,a,b,c,x,y,z);2、#includevoidmain()inta,b,c;floatx,y,z;scanf(%d,&a);scanf(%d,&b);scanf(%d,&c);scanf(%f,&x);scanf(%f,&y);scanf(%f,&z);printf(a=%d,b=%d,c=%dnx=%.3f,y=%.3f,z=%.3f,n,a,b,c,x,y,z);3、#i

36、ncludevoidmain()inta,b,c,x1,x2;scanf(%d,%d,%d,&a,&b,&c);x1=a+b+c;x2=a-b-c;printf(x1=a+b+c=%d+%d+%d=%dn,a,b,c,x1);printf(x2=a-b-c=%d-%d-%d=%dn,a,b,c,x2);4、#includevoidmain()charc1,c2,c3,c4;scanf(%c%c%c%c,&c1,&c2,&c3,&c4);printf(%d,%d,%d,%d,c1,c2,c3,c4);5、#includevoidmain()intd1=60,d2=61,d3=62,d4=63;p

37、rintf(%c,%c,%c,%c,d1+5,d2+5,d3+5,d4+5);6、#includevoidmain()intm=12345678,n=3456789;printf(m=%dn=%d,m,n);7、#includevoidmain()inta=20,b=64,c=127;printf(a=%d,%o,%xn,a,a,a);printf(b=%d,%o,%xn,b,b,b);printf(c=%d,%o,%xn,c,c,c);8、#includevoidmain()floatx,y,z;x=1.414;y=1.732;z=2.712;printf(%6.2f,%6.2f,%6.2f

38、,x,y,z);9、#includevoidmain()printf(%.6f%,1.0/3);10、#includevoidmain()inta,b,a=getchar(b=getchar()c=getchar();a=a+32;b=b+32;c=c+32;putchar(a);putchar(b);putchar(c);实验四选择结构程序设计1.有三个整数a,b,c,由键盘输入，输出其中最大的数。参考程序main()inta,b,c,max;printf(请输入a,b,c=);scanf(%d,%d,%d,&a,&b,&c);max=a;if(maxb)max=b;if(maxc)max=

39、c;printf(n最大数max=%dn,max);2参看C程序设计第三版谭浩强第108页的例5.6.3有一函数：写一程序，输入x,输出y。main()floatx,y;printf(请输入x=);scanf(%f,&x);if(x1)y=x;elseif(x=90)r=A;elseif(s=80)r=B;elseif(s=70)r=C;elseif(s=60)r=D;elser=E;printf(nscore=%dresult=%cn,s,r);参考程序2main()ints，i;charr;printf(请输入score=);scanf(%d,&s);i=(s-s%10)/10;switc

40、h(i)case10:case9:r=A;break;case8:r=B;break;case7:r=C;break;case6:r=D;break;default:r=E;printf(nscore=%dresult=%cn,s,r);5.企业发放奖金I根据利润提成，以下是提成办法：I=10万部分10%10I=20万部分7.5%20I=40万部分5%40I=60万部分3%60I100万部分1%从键盘输入当月利润I，求应发奖金总数。要求：用if语句编程序；用switch语句编程序。参考程序main()floatb1,b2,b3,b4,b5,b6,I;printf(请输入本月利润:);scanf

41、(%f,&I);b1=b2=b3=b4=b5=b6=0;if(I100)b6=(I-100)*0.01;b5=40*0.015;b4=20*0.03;b3=20*0.05;b2=10*0.075;b1=10*0.1;elseif(I60)b5=(I-60)*0.015;b4=20*0.03;b3=20*0.05;b2=10*0.075;b1=10*0.1;elseif(I40)b4=(I-40)*0.03;b3=20*0.05;b2=10*0.075;b1=10*0.1;elseif(I20)b3=(I-20)*0.05;b2=10*0.075;b1=10*0.1;elseif(I10)b2=

42、(I-10)*0.075;b1=10*0.1;elseb1=I*0.1;printf(n本月利润I=%f万元;奖金b=%f万元n,I,b1+b2+b3+b4+b5+b6);参考程序main()floatb1,b2,b3,b4,b5,b6,I,B;printf(请输入本月利润:);scanf(%f,&I);B=0;b6=(I-100)*0.01;b5=40*0.015;b4=20*0.03;b3=20*0.05;b2=10*0.075;b1=10*0.1;if(I100)B+=b1+b2+b3+b4+b5+b6;elseif(I60)B+=(I-60)*0.015+b4+b3+b2+b1;els

43、eif(I40)B+=(I-40)*0.03+b3+b2+b1;elseif(I20)B+=(I-20)*0.05+b2+b1elseif(I10)B+=(I-10)*0.075+b1;elseB=I*0.1;printf(n本月利润I=%f万元;奖金B=%f万元n,I,B);参考程序3main()floatb1,b2,b3,b4,b5,b6,I,B;intn;printf(请输入本月利润:);scanf(%f,&I);B=0;b6=(I-100)*0.01;b5=40*0.015;b4=20*0.03;b3=20*0.05;b2=10*0.075;b1=10*0.1;n=i/10;switc

44、h(n)case0:B=I+0.1;break;case1:B+=(I-10)*0.075+b1;break;case2:case3:B+=(I-20)*0.05+b2+b1;break;case4:case5:B+=(I-40)*0.03+b3+b2+b1;break;case6:case7:case8:case9:B+=(I-60)*0.015+b4+b3+b2+b1;break;case10:default:B+=b1+b2+b3+b4+b5+b6;printf(n本月利润I=%f万元;奖金B=%f万元n,I,B);6给一个不多于5位的正整数，要求：求出它是几位数；分别打印出每一位数字；

45、按逆序打main()intn1,n2,n3,n4,n5,n;longnum;printf(请输入0-99999之间的一个数:);scanf(%ld,&num);if(num9999)n=5;elseif(num999)n=4;elseif(num99)n=3;elseif(num9)n=2;elsen=1;n3=num/100%10;/*取百位*/n4=num/10%10;/*取十位*/n5=num%10;/*取个位*/printf(n原数据num=%ldn,num);printf(反序数为:);switch(n)case1:printf(%dn,n5);break;case2:printf(

46、%d%dn,n5,n4);break;case3:printf(%d%d%dn,n5,n4,n3);break;case4:printf(%d%d%d%dn,n5,n4,n3,n2);break;case5:printf(%d%d%d%d%dn,n5,n4,n3,n2,n1);break;回复21楼2012-03-2912:42举报|郑大男人回复22楼for(k=1;k=9;k+)for(m=1;m=k;k+)printf(%d*%d=%-2d,m,k,m*k);printf(n);3、main()inti,j;for(i=1;i5;i+)for(j=1;j=40-i;j+)printf();

47、for(j=1;j0;i-)for(j=1;j=40-i;j+)printf();for(j=1;j=2*i-1;j+)printf(*);printf(n);4、main()intx,y,z;printf(n大公鸡母鸡雏鸡);for(x=0;x20;x+)for(y=0;y34;y+)z=100-x-y;if(z%3!=0)continue;if(5*x+3*y+z/3=100)printf(n%8d%8d%8d,x,y,z);5、main()longs=0,sn=0;intk,n;printf(nInputn=);scanf(%d,&n);for(k=1;k=n;k+)sn=sn+k;s=

48、s+sn;printf(nn=%d;s=%ldn,n,s);实验七数组（一）1、用随机函数产生15个100以内的随机整数存入一维数组，然后分三行输出，每行3个数。#includevoidmain()inta15,i;for(i=0;i15;i+)ai=rand();/*产生-9032767之间的随机整数*/if(ai0)ai=-ai;ai=ai%101;if(i%5=0)printf(n);printf(%8d,ai);2、求出n个学生一门课程中的最高成绩和最低成绩及高于平均成绩的人数。#defineN10voidmain()floataN=78,86,65,55,91,83,78,90,69

49、,81;floatmax=0,min=100,avg=0;inti,num=0;for(i=0;imax)max=ai;if(aimin)min=ai;avg=avg+ai;avg=avg/N;for(i=0;iavg)num+;printf(nmax=%.2f,min=%.2fn,max,min);printf(n%.2f=%dn,avg,num);3、使用数组,求出下列数列的前20项:1,1,2,4,7,13,voidmain()longa20=1,1,2;inti;for(i=3;i20;i+)ai=ai-1+ai-2+ai-3;for(i=0;i20;i+)if(i%5=0)print

50、f(n);printf(%9ld,ai);4、将一个一维数组反序放置如:a=67,89,76,98.66反序放置后a=66,98,76,8967#defineN5voidmain()intaN=67,89,76,98,66,i,k;for(i=0;iN/2;i+)k=ai;ai=aN-i-1;aN-i-1=k;printf(na=%d,a0);for(i=1;iN;i+)printf(,%d,ai);printf(n);5、有10个学生一门课程成绩,使用选择排序法将成绩由高向低排序.#defineN10voidmain()intaN=67,89,76,98,66,55,77,79,96,89;

51、inti,j,p,k;for(i=0;iN-1;i+)p=i;for(j=i+1;jN;j+)if(apaj)p=j;if(p!=i)k=ai;ai=ap;ap=k;for(i=0;iN;i+)printf(%4d,ai);实验七数组（二）1、将一个一维数组a9中各元素值按行的顺序放入二维数组b33中。voidmain()inta9=1,2,3,4,5,6,7,8,9,b33,i,j,k=0;for(i=0;i3;i+)for(j=0;j3;j+)bij=ak+;printf(%8d,bij);printf(n);2、有一mn矩阵,各元素由随机数产生,将矩阵增加一列,求矩阵每一行的元素值之和,

52、并将它放入增加列.#include#definem3#definen4voidmain()longa?n+1;inti,j;for(i=0;im;i+)ain=0;for(j=0;jn;j+)aij=rand();ain=ain+aij;printf(%8ld,aij);printf(%8ldn,ain);3、有一mn矩阵,找出最大元素值及其所在的行、列位置。#definem3#definen4main()longa?n;inti,j,row=0,col=0;for(i=0;im;i+)for(j=0;jn;j+)aij=rand();printf(%8ld,aij);if(arowcolai

53、j)row=i;col=j;printf(n);printf(nmax=%ldrow=%dcol=%dn,arowcol,row+1,col+1);4、有n个考生，每个考生有考号和总分成绩，如果录取m人，确定录取分数线并输出被录取考生的考号和成绩。voidmain()floata1002,temp,temp1;inti,j,p,n;printf(ninputnumberofstudentn=);scanf(%d,&n);for(i=0;in;i+)printf(ninputnum,scoreof%dthstudent:,i+1);scanf(%f,%f,&temp1,&temp);ai0=te

54、mp1;ai1=temp;for(i=0;in-1;i+)p=i;for(j=i+1;jn;j+)if(ap1aj1)p=j;if(p!=i)temp=ap1;ap1=ai1;ai1=temp;temp=ap0;ap0=ai0;ai0=temp;printf(ninputadmittablenumber:);scanf(%d,&p);printf(noutputnamelist:n);for(i=0;ip;i+)printf(%10.0f%10.1fn,ai0,ai1);5、将矩阵m(n,n)对角线上的元素置为1，他置0.#definen10voidmain()intann=0,i,j;for

55、(i=0;in;i+)aii=1;ain-1-i=1;for(j=0;jn;j+)printf(%4d,aij);printf(n);实验十四文件1、打开开始-程序-附件-记事本输入：1001zhangsan7890891002lisi9988771003wangwu8976551004zhaoliu535544存在e盘根目录下，文件名为chengji2、#include#include#defineN5main()FILE*fp;intnum,sc1,sc2,sc3,score,i;charname10;if(fp=fopen(e:chengji.txt,r)=NULL)printf(Err

56、or);exit(0);for(i=1;i=N;i+)fscanf(fp,%d%s%d%d%dn,&num,name,&sc1,&sc2,&sc3);score=sc1+sc2+sc3;printf(%6d%10s%6d%6d%6d%6dn,num,name,sc1,sc2,sc3,score/3);fclose(fp);3、#include#include#defineN5structstudentintnum;charname10;intscore;chardianhua10;main()FILE*fp;inti;structstudentstuN;clrscr();if(fp=fopen

57、(e:xuesheng.txt,w)=NULL)printf(Error);exit(0);for(i=0;iN;i+)scanf(%d%s%d%s,&stui.num,,&stui.score,stui.dianhua);fprintf(fp,%6d%10s%6d%10sn,stui.num,,stui.score,stui.dianhua);fclose(fp);4、#include#include#defineN5structstudentintnum;charname10;intscore;chardianhua10;main()FILE*fp;in

58、ti,xuehao;structstudentstuN;clrscr();if(fp=fopen(e:xuesheng.txt,r)=NULL)printf(Error);exit(0);scanf(%d,&xuehao);for(i=0;iN;i+)fscanf(fp,%d%s%d%sn,&stui.num,,&stui.score,stui.dianhua);if(stui.num=xuehao)printf(%6d%10s%6d%10sn,stui.num,,stui.score,stui.dianhua);fclose(fp);5、#include#

59、includevoidmain()FILE*fp1,*fp2;charch;if(fp1=fopen(c:tcfile4.c,r)=NULL)/以读文本文件方式打开原有文件printf(Error);exit(0);if(fp2=fopen(c:tcfile5.c,w)=NULL)/以写文本文件方式打开目标文件printf(Error);exit(0);ch=fgetc(fp1);while(ch!=EOF)fputc(ch,fp2);/把该字符写入目标磁盘文件ch=fgetc(fp1);/从原有磁盘文件中读一个字符fclose(fp1);fclose(fp2);6、#include#incl

60、ude#include#defineN5voidmain()FILE*fp;intnum,jd1,jd2,jd3,jd4,jidu,i;1、#includevoidmain()inta,b,c;scanf(%d,%d,%d,&a,&b,&c);printf(sum=%dn,a+b+c);2、#includevoidmain()inta,b,he,cha,ji,shang;scanf(%d,%d,&a,&b);he=a+b;cha=a-b;ji=a*b;shang=a/b;printf(he=%dn,he);printf(cha=%dn,cha);printf(ji=%dn,ji);printf