C语言专升本2阅读程序题3月10日终版

1、一、基本输入输出1.#include <stdio.h>main()printf("a_bctdret_fn");printf("gh_tij_bb_k");注：“_”代表一个空格。运行结果为：e_ _ _ _ _ _ _ _fgh_ _ _ _ _ _ i_ _k3.#include <stdio.h> main() int z, x=6,y=5;char w=c;z=x+y+w;printf("%d,%d,%d",x,y,z);运行结果为：6,5,1102.#include <stdio.h>m

2、ain() char c1=a,c2=b,c3=c;printf("a%cb%cc%c ",c1,c2,c3);运行结果为：aabbcc4. #include <stdio.h>main() int i=128;float x=234.89;printf(“n”);printf("%5d,%8.2fn",i,x);printf("%2d,%4.1fn",i,x);运行结果为： 128, 234.89128,234.95.#include <stdio.h> void main(void) int x=15,y=

3、5; float f=1234.567f,b=12345; printf("%f %10f %10.2f %.2f%-10.2fn",f,f,f,f,f); printf("x+y=%dn",x+y); printf("b=%8f",b); 运行结果为：1234.567000 1234.567000 1234.57 x+y=20b=12345.0000006.#include <stdio.h>main( ) int i=8, j=9; int x, y, z , w; x=i- ; y=i ; z=+j; w=j; pr

4、intf(“%d,%d,%d,%d”,x,y,z,w); 运行结果为： 8,7,10,108. #include <stdio.h>main() int x=10;int y=79;printf("%5d,%5d,%5d",!x,x|y,x&&y); 注：“_”代表一个空格运行结果为：0, 1, 17. #include <stdio.h>main() int a=1,b=2;a=a+b; b=a-b; a=a-b;printf(“a=%d,b=%dn”,a,b);运行结果为：a=2,b=19. #include <stdio.

5、h> main() int z, x=2,y=4; char w=c;z=x+y;printf("%d,%d,%d,%c",x,y,z,w);运行结果为：2,4,6,c10.#include <stdio.h> main() char c='a'printf("%c,%dn",c,c);运行结果为：a,9711. #include <stdio.h>main ( ) char c1, c2;c1=getchar ( );printf (“%c, %dn”, c1,c1 );c2=c1+32;printf (“

6、%c,%dn”, c2,c2 );若敲进A,则运行结果为A,65a,9712#include <stdio.h>main() int z,x=7,y=4; char w=c;z=x>y&&y+3<7|w;printf("n%d,%d,%d",x,y,z);运行结果为：7,4,113.#include <stdio.h>main() int i=10,j=10;int x,y,z,w;x=i-;y=i;z=+j;w=j;printf("%d,%d,%d,%d",x,y,z,w);运行结果为：10,9,11

7、,1114. #include <stdio.h>main()int i=8,j=10,m=0,n=0;m+=i+;n- =-j; printf(“i=%d,j=%d,m=%d,n=%d”,i,j，m,n);运行结果为：i=9,j=9,m=8,n=-915. #include <stdio.h>main() int x, b0, b1, b2; printf("Please enter an integer x:"); scanf("%d", &x); b2 = x / 100; b1 = (x - b2 * 100) /

8、 10; b0 = x % 10; printf("bit0=%d, bit1=%d, bit2=%dn", b0, b1, b2);若输入352，运行结果为：bit0=2, bit1=5, bit2=3二、程序控制结构（顺序，分支，循环）1.#include <stdio.h>main() int a=1,b=3,c=5;if (c=a+b) printf("yesn");else printf("non");运行结果为：no2. #include <stdio.h>main() int a=12, b= -

9、34, c=56, min;min=a; if(min>b) min=b; if(min>c) min=c;printf("min=%d", min);运行结果为：min=-343.#include <stdio.h>main() int x=2,y= -1,z=5; if(x<y)if(y<0) z=0;else z=z+1; printf(“%dn”,z); 运行结果为： 54. #include <stdio.h>main()int a=10,b=50,c=30;if(a>b)a=b;b=c;c=a;printf(

10、"a=%d b=%d c=%dn",a,b,c);运行结果为：a=10 b=30 c=105. #include <stdio.h>main() float a,b,c,t;a=3;b=7;c=1;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("%5.2f,%5.2f,%5.2f",a,b,c);运行结果为：1.00,3.00,7.006. #include <stdio.h>main()int a=2;float num=3

11、.12,x;if(num<4) x=2*num*a;printf("result is %fn",x);运行结果为：result is 12.4800007.#include<stdio.h>main( ) char c=A; if (0<=c ) &&(c<=9) printf(“YES”);elseprintf(“NO”);运行结果为：NO8#include <stdio.h>main ( ) float c=3.0 , d=4.0;if ( c>d ) c=5.0;else if ( c=d ) c=6.

12、0;else c=7.0; printf ( “%.1fn”,c ) ;运行结果为：7.09. #include <stdio.h>main() int a=0,b=1,c=0,d=20;if(a) d=d-10;else if(!b)if(!c) d=15;else d=25;printf("d=%dn",d);运行结果为：d=2010.#include <stdio.h>main() int a=2,b=3,c=1;if (a>b)if (a>c)printf (“%dn”,a);else printf (“%dn”,c);print

13、f (“over!n”); 运行结果为: over!11.#include <stdio.h>main()int m;scanf("%d", &m);if (m >= 0) if (m%2 = 0)printf("%d is a positive evenn", m);elseprintf("%d is a positive oddn", m); else if (m % 2 = 0) printf("%d is a negative evenn", m);else printf(&quo

14、t;%d is a negative oddn", m);若键入9，则运行结果为:-9 is a negative odd12.#include<stdio.h> main( ) char ch; ch=getchar( ); switch(ch) case A : printf(“%c”,A); case B : printf(“%c”,B); break; default: printf(“%sn”,”other”); 当从键盘输入字母A时，运行结果为：AB13. #include <stdio.h>main( ) int a=1,b=0; scanf(“

15、%d”,&a);switch(a) case 1: b=1;break;case 2: b=2;break;default : b=10;printf("%d", b);若键盘输入5，运行结果为：1014.#include <stdio.h>main ( ) int i=0,j=0,k=6; if(+i>0)|(+j>0) k+; printf("%d,%d,%dn",i,j,k);运行的结果为: 1,0,715.#include <stdio.h>main( ) int x , y , z; x=20, y=

16、40, z=60; while(x<y) x+=4, y-=4; z/=2; printf(“%d,%d,%d”,x,y,z);运行结果为：32,28,3016. #include <stdio.h>main() int num=0;while(num<=2) num+;printf("%dn",num);运行结果为：12317.#include <stdio.h>main() int n=9;while(n>6) n-;printf(“%d,”,n);运行结果为：8,7,6,18#include <stdio.h>ma

17、in( ) int sum=10,n=1;while(n<3)sum=sum-n; n+; printf(“%d,%d”,n,sum); 运行结果为：3,719.#include <stdio.h>main() int num,c; scanf("%d",&num); doc=num%10; printf("%d",c);while(num/=10)>0);printf("n"); 从键盘输入23，则运行结果为：3220#include <stdio.h>main() int s=0,a=5

18、,n;scanf("%d",&n);do s+=1; a=a-2; while(a!=n);printf("%d,%dn",s,a); 若输入的值1，运行结果为：2,121.#include <stdio.h>main() int n1,n2;scanf(“%d”,&n2);while(n2!=0) n1=n2%10;n2=n2/10;printf(“%d”,n1);若在运行时输入1298，运行结果为：892122.#include <stdio.h>main() int i;for (i=0;i<6;i+)

19、 printf (“%d”,+i); printf (“%d”,i+);运行结果为：135623#include "stdio.h" main() char c; c=getchar(); while(c!='?') putchar(c); c=getchar(); 如果从键盘输入abcde?fgh（回车）运行结果为：abcde24#include <stdio.h>main() char c; while(c=getchar()!=$) if(A<=c&&c<=Z) putchar(c); else if(a<

20、=c&&c<=z) putchar(c-32); 当输入为ab*AB%cd#CD$时，运行结果为：ABABCDCD25. #include <stdio.h>main()inti=0,s=0;do if(i%2) i+; continue; i+; s +=i;while(i<7);printf("%dn",s);运行结果为：1626.#include <stdio.h>main() int x=1, y =0;while(x<=10) y+=x*x; if (y>=10) break; x+;printf(“

21、%d %d”,y,x);运行结果为：327. #include <stdio.h>main() int x, y =0;for(x=1;x<=10;x+) if(y>=10) break; y=y+x; printf(“%d %d”,y,x);运行结果为：10 528.#include <stdio.h> main( ) int n=0; while(n<=3) switch(n) case 0 : ; case 1 : printf(“%d,”,n); case 2 : printf(“%d,”,n);n=n+3; break; default: p

22、rintf(“*”);n=n+1; 运行结果为：0,0,*29 #include <stdio.h>main() int x=1,y=0,a=0,b=0;switch(x) case 1: switch(y) case 0: a+;break; case 1: b+;break; case 2: a+;b+;break;printf(“a=%d, b=%d”,a,b);运行结果为：a=2,b=130. #include <stdio.h> main() char grade=C; switch(grade) case A: printf(“90-100n”); case

23、 B: printf(“80-90n”);case C: printf(“70-80n”);case D: printf(“60-70n”); break;case E: printf(“<60n”); default : printf(“error!n”); 运行结果为：70-8060-7031#include <stdio.h>main() int k=0;char c='A'do switch(c+) case 'A': k+;break;case 'B': k-;case 'C': k+=2;break;

24、case 'D': k=k%2;continue;case 'E': k=k+10;break;default: k=k/3;k+;while(c<'C') ;printf("k=%dn",k);运行结果为:k=432.#include <stdio.h>main() int i=10; switch ( i ) case 9: i+=1; case 10: i+=1; case 11: i+=1; default: i+=1; printf(“i=%dn”,i);运行结果为：i=1333#include &

25、lt;stdio.h>main( ) int sum=0;i=0; while(i<=100) sum=sum+i; printf(“i=%dn”,i);printf(“sum=%dn”,sum); 运行结果为：死循环，无结果34. #include <stdio.h>main() int i,sum=0;i=1;dosum=sum+i;i+;while(i<=10);printf(“%d”,sum);运行结果为： 5535.#include <stdio.h>main ( ) int i=0, sum=1 ;do sum+=i+ ; while (

26、i<6 );printf ( “%dn”, sum );运行结果为：1636.#include <stdio.h>main() int i;printf("n");for(i=0;i<6;i+) printf("%d",i);if (i%2=0)printf("n");运行结果为：01234537.#include <stdio.h> main( ) int i; for(i=0;i<8;i+) printf("%d,",+i); printf("%d,"

27、;, i+);printf("%d", i); 运行结果为：1,3,5,7,8,938.#include<stdio.h>main( ) int i=0, j=0;while( i<10) i+;while(j+<10) ;printf(“%d,%d”, i, j);运行结果为：10,1139.#include<stdio.h>main( )char i, j; for(i=0, j=9; i<j ; i+, j-) printf(“%c%c”, i, j);运行结果为：091827364540. #include <stdi

28、o.h>main() int i, n, sum = 0, counter = 0;printf("Input 4 Numbers:n");for (i = 0; i < 4; i+) scanf("%d", &n); if (n >= 0) sum += n; counter+; printf("sum=%d,counter=%dn", sum,counter);若键入3 -5 7 -9运行结果为：sum=10,counter=241. #include <stdio.h>main() int

29、i=5; do switch (i%2) case 4: i- -; break;case 6: i- -; continue; i- -; i- -; printf(“i=%dn”,i); while(i>0);运行结果为：i=3i=1i=-142.#include <stdio.h>main() int y=9; for(;y>0;y- -)if(y%3=0) printf(%d”,- -y); continue;运行结果为：852*43.#include <stdio.h>#define N 4main() int i; int x1=1,x2=2;f

30、or(i=1;i<=N;i+) printf("%4d%4d",x1,x2);if(i%2=0) printf("n");x1=x1+x2;x2=x2+x1;运行结果为：1 2 3 513 21 3444.#include <stdio.h>main() int i, j; for(i=0;i<5;i+) printf("n"); for (j=i+;j<6;j+)printf(“* “);运行结果为：* * * * * * * * * *45#include <stdio.h>main( )

31、 int x, y; for(x=30,y=0;x>=10,y<10; x-,y+) x/=2, y+=2; printf(“x=%d,y=%dn”,x,y);运行结果为：x=0,y=12*46. #include <stdio.h>#define N 4main( ) int i,j; for(i=1;i<=N;i+) for(j=1;j<i;j+) printf(" "); printf("*"); printf("n"); 运行结果为：* * * *三、函数1.#include <std

32、io.h>int Sub(int a, int b)return (a -b);main()int x, y, result = 0;scanf("%d,%d", &x,&y ); result = Sub(x,y ) ; printf("result=%dn",result);当从键盘输入:6,3运行结果为：result=32. #include <stdio.h>int min( int x, int y ) int m; if ( x> y ) m = x;else m = y; return(m);

33、60;main() int a=3,b=5,abmin ; abmin = min(a,b); printf(“min is %d”,abmin); 运行结果为：min is 53.#include<stdio.h> main( ) int x=10; int x=20; printf(“%d, ”, x); printf(“%d”, x); 运行结果为：20,104.#include<stdio.h>int fun(int m,int n)static s=1; s+;return(s*(m+n);main( ) int a=0,b=1;printf("%d

34、,",fun(a,b); printf("%d,",fun(a,b); 运行结果为：2,3,5.#include<stdio.h> func(int x) x=10; printf(“%d, ”,x); main( ) int x=20; func(x); printf(“%d”, x); 运行结果为：10,206.#include <stdio.h>int m=4;int func(int x,int y)int m=1;return(x*y-m);main()int a=2,b=3;printf("%dn",m);p

35、rintf("%dn",func(a,b)/m); 运行结果为：417.#include <stdio.h>int fun(int a, int b) if(a>b) return(a);else return(b);main() int x=15, y=8, r;r= fun(x,y);printf("r=%dn", r);运行结果为：r=158.#include <stdio.h>int fac(int n) int f=1,i;for(i=1;i<=n;i+) f=f * i;return(f);main() i

36、nt j,s;scanf(“%d”,&j);s=fac(j);printf("%d!=%dn",j,s);如果从键盘输入3， 运行结果为：3!=69. #include <stdio.h>int b=1;void fun() int c=2;static int a=0; a=a+b+c; printf(“%d ”,a);main() int cc;for(cc=1;cc<4;cc+) fun();运行结果为：3 6 910.#include <stdio.h>int f(int a) auto int b=0; static c=4;

37、 b=b+1; c=c+1; return(a+b+c); main() int a=3,i; for(i=0;i<3;i+)printf(“n%d”,f(a); 运行结果为：9101111. #include <stdio.h>unsigned fun6(unsigned num) unsigned k=1;do k*=num%10; num/=10;while(num); return k;main() unsigned n=26; printf(“%dn”,fun6(n); 运行结果为：1212. #include <stdio.h> float f1(fl

38、oat x,float y) float f2(float m,float n);float z; z=(x+y)/f2(x,y);return(z);float f2(float m,float n) float k; k=m-n; return(k);main() float a=2,b=3,c; c=f1(a,b);printf(“nc=%f”,c); 运行结果为：c=-513#include <stdio.h>int max(int x, int y);main() int a,b,c;a=7;b=8;c=max(a,b);printf("Max is %d&qu

39、ot;,c);max(int x, int y) int z;z=x>y? x : y;return(z) ;运行结果为：Max is 8*14.#include <stdio.h>int fac1(int n) int f; if (n= =1) f=1; else f=fac1(n-1)*n; printf(“f=%d,”,f); return(f); main() int y,n=4;y=fac1(n);printf(“y=%dn”,y);运行结果为：f=1,f=2,f=6,f=24,y=24四、数组1.#include <stdio.h>main() in

40、t i, a10;for(i=9;i>=0;i-) ai=10-i;printf(“%d%d%d”,a2,a5,a8);运行结果为：8522. #include <stdio.h>main() int i,a6; for (i=0; i<6; i+) ai=i; for (i=5; i>=0 ; i-) printf("%3d",ai); 运行结果为： 5 4 3 2 1 0 3. #include <stdio.h>main( ) int i,k,a10,p3;k=5;for(i=0;i<10;i+)ai=i;for(i=0

41、;i<3;i+)pi=ai*(i+1);for(i=0;i<3;i+)k+=pi*2;printf("%dn",k);运行结果为：214.#include <stdio.h>main( ) int n33, i, j;for(i=0;i<3;i+ )for(j=0;j<3;j+ )nij=i+j;printf(“%d ”, nij);printf(“n”);运行结果为：1 22 33 45.#include <stdio.h>int m33=1,2,3;int n33=1,2 ,3;main( ) printf(“%d,”,

42、m10+n00); printf(“%dn”,m01+n10);运行结果为：3,06.#include <stdio.h>main() int i;int x33=1,2,3,4,5,6,7,8,9; for (i=1; i<3; i+)printf("%d ",xi3-i); 运行结果为：6 87.#include <stdio.h>main() int j;char str10; scanf(“%s”, str); printf(“%sn”,str); 键盘输入:howare(空格) you（回车）运行结果为：howare8 #includ

43、e “stdio.h” func(int b ) int j; for(j=0;j<4;j+) bj=j; main( ) int a4, i; func(a); for(i=0; i<4; i+) printf(“%2d”,ai); 运行结果为： 0 1 2 39#include <stdio.h>main()char diamond5=_,_,*,_,*,_,*,*,_,_,_,*,_,*,_,*,_,_,*;int i,j;for(i=0;i<5;i+)for(j=0;j<5;j+)printf(“%c”,diamondij);printf(“n”);

44、注：“_”代表一个空格。运行结果为：_*_*_*_*_*_*_*10. #include <stdio.h>main( ) int i, f10; f0=f1=1; for(i=2;i<10;i+) fi=fi-2+fi-1; for(i=0;i<10;i+) if(i%4=0) printf(“n”); printf(“%d ”,fi); 运行结果为：1 1 2 35 8 13 2134 5511. #include <stdio.h>main（） float fun(float x); float ave,a3=4.5，2，4; ave=fun（a）;

45、printf(“ave=%7.2f”,ave); float fun（float x） int j;float aver=1; for (j=0;j<3;j+)aver=xj*aver; return（aver）;运行结果为：ave= 36.0012#include <stdio.h>main()int a23=1,2,3,4,5,6;int b32,i,j;for(i=0;i<=1;i+)for(j=0;j<=2;j+) bji=aij;for(i=0;i<=2;i+) for(j=0;j<=1;j+) printf("%5d",

46、bij); 运行结果为： 1 4 2 5 3 613#include <stdio.h>f(int b,int n)int i,r; r=1; for (i=0;i<=n;i+) r=r*bi; return (r);main() int x,a=1,2,3,4,5,6,7,8,9; x=f(a,3); printf(“%dn”,x);运行结果为：24 14.#include"stdio.h"main()int j,k; static int x44,y44;for(j=0;j<4;j+) for(k=j;k<4;k+) xjk=j+k;for

47、(j=0;j<4;j+) for(k=j;k<4;k+) ykj=xjk;for(j=0;j<4;j+) for(k=0;k<4;k+) printf("%d,",yjk);运行结果为：0,0,0,0,1,2,0,0,2,3,4,0,3,4,5,6五、指针1.# include <stdio.h>main ( ) int x = 10, 20, 30, 40, 50 ;int *p ;p=x;printf ( “%d”, *(p+2 ) ); 运行结果为： 302.#include <stdio.h>main( ) char

48、s=”abcdefg”; char *p; p=s; printf(“ch=%cn”,*(p+5);运行结果为： ch=f3.#include<stdio.h>main ( ) int a=1, 2, 3, 4, 5 ;int x, y, *p;p=a;x=*(p+2);printf("%d:%d n", *p, x);运行结果为: 1:34.#include <stdio.h>main( ) int a =1, 2, 3, 4, 5, 6; int x, y, *p; p = &a0; x = *(p+2); y = *(p+4); printf(“*p=%d, x=%d, y=%dn”, *p, x, y);运行结果为： *p=1, x=3, y=55.#include<stdio.h>main() int a5=1,2,3,4,5; int i,*p; p=a; for(i=0;i<5;i+)printf("*%d",ai); for(i=0;i<5;i+) printf("#%d",*p+);运行结果为： *1*2*3*4*5#1#2#3#4#56.#includ