c语言程序代码

c语言程序代码c语言程序代码c语言程序代码xxx公司c语言程序代码文件编号：文件日期：修订次数：第1.0次更改批准审核制定方案设计，管理制度要求在屏幕上输出下一行信息。Thisisacprogram.程序:#include<>intmain(){printf(“thisisacprogram.\n”);return0;}求两个整数之和。程序：#include<>intmain(){inta,b,sum;a=122;b=234;sum=a+b;printf(“sumis%d\n”,sum);return0;}求两个整数之间的较大者。程序：#include<>intmain(){intmax(intx,inty);inta,b,c;scanf("%d,%d",&a,&b);c=max(a,b);printf("max=%d\n",c);return0;}intmax(intx,inty){intz;if(x>y)z=x;elsez=y;return(z);}有人用温度计测量出华氏发表示的温度（如69°F），今要求把她转换成以摄氏法表示的温度（如20℃）。公式：c=5（f-32）/9.其中f代表华氏温度，c代表摄氏温度。程序：#include<>intmain(){floatf,c;f=;c=9)*(f-32);printf("f=%f\nc=%f\n",f,c);return0;}计算存款利息。有1000元，想存一年。有一下三种方法可选：（1）活期：年利率为r1；（2）一年定期：年利率为r2；（3）存两次半年定期：年利率为r3。分别计算一年后按三种方法所得到的本息和。程序：#include<>intmain(){floatp0=1000,r1=,r2=,r3=,p1,p2,p3;p1=p0*(1+r1);p2=p0*(1+r2);p3=p0*(1+r3/2)*(1+r3/2);printf("p1=%f\np2=%f\np3=%f\n",p1,p2,p3);return0;}给定一个大写字母，要求以小写字母输出。程序：#include<>intmain(){charc1,c2;c1=’A’;c2=c1+32;printf(“%c\n”,c2);printf(“%d\n”,c2);return0;}给出三角形的三边长，求三角形的面积。公式：若给定三角形的三边长，且任意两边之长大于第三边。则：area=其中s=(a+b+C)/2.程序：#include<>#include<>intmain(){doublea,b,c,area;a=;b=;c=;s=(a+b+c)/2;area=sqrt(s*(s-a)*(s-b)*(s-c));printf(“a=%f\tb=%f\tc=%f\n”,a,b,c);printf(“area=%f\n”,area);return0;}求ax2+bx+c=0方程的根。a,b,c由键盘输入，设b2-4ac>0.程序：#include<>#include<>intmain(){doublea,b,c,disc,x1,x2,p,q;scanf(“%lf%lf%lf”,&a,&b,&c);disc=b*b-4*a*c;if(disc<0)printf(“Thisquestionhasnorealroots\n”);else{p=-b/*a);q=sqrt(disc)/*a);x1=p+q;x2=p-q;printf(“x1=%\nx2=%\n”,x1,x2);}return0;}先后输出BOY三个字符。程序：#include<>intmain(){chara=’B’,b=’O’,c=’Y’;putchar(a);putchar(b);putchar(c);putchar(‘\n’);return0;}用三个getchar函数先后向计算机输入BOY三个字符，然后用putchar函数输出。程序：#include<>intmain(){chara,b,c;a=getchar();b=getchar();c=getchar();putchar(a);putchar(b);putchar(c);putchar(‘\n’);return0;}或#include<>intmain(){putchar(getchar());putchar(getchar());putchar(getchar());putchar(‘\n’);return0;}用getchar函数从键盘读入一个大写字母，把它转换成小写字母，然后用getchar函数输出对应的小写字母。程序：#include<>intmain(){charc1,c2;c1=getchar();c2=c1+32;putchar(c2);putchar(‘\n’);return0;}输入两个实数，按代数值由小到大的顺序输出这两个数。（参照将两个杯子中的水互换，必须借助第三个杯子）。程序：#include<>intmain(){floata,b,t;scanf(“%f,%f”,&a,&b);if(a>b){t=a;a=b;b=t;}printf(“%,%\n”,a,b);return0;}输入a，b，c三个数，要求由小到大的顺序输出。程序：#include<>intmain(){ floata,b,c,t; scanf("%f,%f,%f",&a,&b,&c); if(a>b); { t=a; a=b; b=t; } if(a>c) { t=a; a=c; c=t; } if(b>c) { t=b; b=c; c=t; } printf("%,%,%\n",a,b,c); return0;}14．输入一个字符，判断它是否为大写字母，如果是，将它转换成小写字母，如果不是，不转换。然后输出最后得到的字符。程序：#include<>intmain(){charch;scanf(“%c”,&ch);ch=(ch>=’A’&&ch<=’Z’)(ch+32):ch;printf(“%c\n”,ch);return0;}或#include<>intmain(){ charch; scanf("%c",&ch); if(ch>='A'&&ch<='Z') printf("%c\n",ch+32); else printf("%c\n",ch); return0;}15.有一个函数:y=编一程序。输入一个x的值，要求输出相应的y值。程序：#include<>intmain(){ intx,y; scanf("%d",&x); if(x<0) y=-1; else if(x==0) y=0; else y=1; printf("x=%d\ny=%d\n",x,y); return0;}16.要求按照考试成绩的等级输出百分制分数段，A等为85分以上，B等为70-84分。C等为60-69分，D等为60分以下。成绩的等级由键盘输入。程序：#include<>intmain(){ chargrade; scanf("%c",grade); printf("Youscore:\n"); switch(grade) { case'A':printf("85~100\n");break; case'B':printf("70~84\n");break; case'C':printf("60~69\n");break; case'D':printf("<60\n");break; default:printf("enterdateerror\n"); } return0;}17.写一程序，判断某一年是否为闰年。程序:#include<>intmain(){ intleap,year; printf("pleaseenteryear:"); scanf("%d",&year); if(year%4==0) { if (year%100==0) { if(year%400==0) leap=1; else leap=0; } else leap=1; } elseleap=0; if(leap) printf("%disaleapyear\n",year); else printf("%disnotaleapyear\n",year); return0;}或#include<>intmain(){ intleap,year; printf("pleaseenteryear:"); scanf("%d",&year); if(year%4!=0) leap=0; elseif(year%100!=0) leap=1; elseif(year%400!=0) leap=0; else leap=1; if(leap==1) printf("%disaleapyear\n",year); else printf("%disnotaleapyear\n",year); return0;}或#include<>intmain(){ intleap,year; printf("pleaseenteryear:"); scanf("%d",&year); if((year%4==0&&year%100!=0)||(year%400==0)) leap=1; else leap=0; if(leap==1) printf("%disaleapyear\n",year); else printf("%disnotaleapyear\n",year); return0;}18.求ax2+bx+c=0方程的根。a,b,c由键盘输入。（完整版）程序：#include<>#include<>intmain(){ doublea,b,c,disc,x1,x2,x3,realpart,imagepart; scanf("%lf,%lf,%lf",&a,&b,&c); printf("Theequation"); if(fabs(a)<=1e-6) printf("isnotaquadratic"); else { disc=b*b-4*a*c; if(fabs(disc)<=1e-6) printf("hastwoequalroots%\n",-b/2*a); else if(disc>1e-6) { printf("hastwodistinctrealroots\n%,%",x1,x2); x1=(-b+sqrt(disc))/2*a; x2=(-b-sqrt(disc))/2*a; } else { realpart=-b/2*a; imagepart=sqrt(-disc)/2*a; printf("hastwocomplexroots:\n"); printf("%+%\n",realpart,imagepart); printf("%%\n",realpart,imagepart); } } return0;}19.给出一个不多出5位的正整数，要求：（1）：求出它是几位数;（2）：分别输出每一位数字；（3）：按逆序输出各位数字，例如原数为321，输出123。程序：#include<>intmain(){ intnum,indiv,ten,hundred,thousand,ten_thousand,place; printf("请输入一个正整数(0~99999)："); scanf("%d",&num); if(num>9999) place=5; elseif(num>999) place=4; elseif(num>99) place=3; elseif(num>9) place=2; else place=1; printf("位数为:%d\n",place); ten_thousand=num/10000; thousand=(num-ten_thousand*10000)/1000; hundred=(num-ten_thousand*10000-thousand*1000)/100; ten=(num-ten_thousand*10000-thousand*1000-hundred*100)/10; indiv=(num-ten_thousand*10000-thousand*1000-hundred*100-ten*10); printf("每一个数字分别为："); printf("%d,%d,%d,%d,%d\n",ten_thousand,thousand,hundred,ten,indiv); switch(place) { case5:printf("反序数字为：%d%d%d%d%d\n",indiv,