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1、阅读程序写结果试题第四章 选择结构 (共 20 道题)1. (于蕾)#include void main( )int x,y,t;x=7;y=9;if(xy) t=x;x=y;y=t; printf(%d,%dn , x,y );运行结果：9,72. (于蕾)#include void main( )int x=1,a=2,b=3;switch(x)case1: a-; break;case2: b+; break;case3: a+;b+;printf(na=%d,b=%dn,a,b);运行结果：a=1,b=33. (于蕾)#include void main( )char ch1 = E;
2、 if(ch1 = A)ch1+;elsech1+=32;printf(ch1 = %cn, ch1);运行结果：ch1= F4. (于蕾)#include void main( )int x,y,t;x=5;y=3;if(xy) t=x;x=y;y=t; printf(%d,%dn , x,y );运行结果：3,55. (王伟)#include int main()int a,b,c,m;printf(Enter three integers:); scanf(%d%d%d,&a,&b,&c); if(a=b)m=a;elsem=b;if(cm)m=c;printf(m=%dn,m);ret
3、urn 0;输入： 21 22 23运行结果：6. (王伟)#include int main()char ch1=a,ch2=B,ch3=E;if(ch1ch2)if(ch2ch3)ch3+;else-ch3;printf(ch3=%cn,ch3);return 0;运行结果：ch3=D7. (王伟)#include int main()float x,y;scanf(%f,&x);switch(int)x/10)case 0: y=1.0;printf(y=%fn,y);break;case 1: y=2*x+1;printf(y=%fn,y);break;case 2: y=3*x*x+
4、2;printf(y=%fn,y);break;default:printf(No definition.n);return 0;输入： 15.3运行结果：y=31.6000008. (王伟)#include int main()char ch1=A,ch2=B;switch(ch1)case A:switch(ch2)case B: printf(Good!n);break;case A: printf(Better!n);break;case B: printf(Best!n); break;return 0;运行结果：Good!Best!9. (王锋)#include void main
5、()float score;score = 100;if (score60) printf(En);elseswitch( ( int ) score / 10 ) case 10:case 9: printf(An);case 8: printf(Bn);case 7: printf(Cn);break;case 6: printf(Dn);break;default: printf(Errorn);运行结果：BC10. (王锋)#include void main()int i=0 ， a=2；if(i=0)printf( “ *)”；elseprintf( “ $)”；printf( “
6、 *)”；运行结果：*11. (王锋)#includevoid main()int m=10,n=0,p=4,q=20;if (m)if (n)q=15-m;elseq=25+m;else if (p)q=q+p;printf( “q=%dn ”,q);运行结果：q=3512. (王锋)#includevoid main()int a=1,b=0;switch(a)case 1: switch (b)case 0: printf( “*0* ”); break;case 1:printf( “*1* ”);break;case 2: printf( “*2* ”);break;运行结果：*0*
7、2*13. (宋昕)#includeint main( )int a=2,b=7,c=5;switch (a0)case 1: switch (b0)case 1: printf(); break ;case 2: printf(!); break ;case 0: switch (c=5)case 3: printf(*) ; break ;default : printf(#) ; break ;default : printf(&);printf(n);return 0;运行结果：*&14. (宋昕)#includeint main()int a=0,b=1,c=0,d=20;if(a)
8、 d=d-10;else if (!b)if(!c) d=15;else d=25;printf(d=%dn,d);return 0;运行结果：d=2015. (宋昕)#includeint main() int a=1;switch(a)case 0: printf(*0*);break;case 1:printf(*1*);break;case 2:printf(*2*);break;return 0;运行结果：*1*16. (宋昕)#include int main() int x, y;scanf(%d,&x);y = x12 ? x + 10 : x - 12;printf(%dn,
9、 y);return 0;输入： 12运行结果：017. (宋昕)#include int main()float x, y;char op;double r;scanf(%c%f%f,&op,&x,&y); switch(op) case +: r = x + y; break; case -: r = x - y; break;case *: r = x * y; break; case /: r = x / y; break;printf(%.1f, r);return 0;输入： 3.5运行结果：0.618. (王勇超)#include stdio.hvoid main( )int a
10、=7;if(a9 | a10)a=a/3;elsea=a%3;printf(a=%d, a);运行结果：a=219. (王勇超)#includevoid main()int a=20;switch(a%3)case 0: printf(0);case 1: printf(1);case 2: printf(2); default: printf(3);printf(4);运行结果：23420. (王勇超)#include void main()int a=2,b=5,c=8,t;if ( a b ) t = a; a = b; b = t; if ( b c ) t = b; b = c; c
11、 = t; if ( a b ) t = a; a = b; b = t; printf( %d,%dn, a+, -c );运行结果：8,1第五章 循环结构共 20 道题1. (于蕾 )#include void main()int number , digit;number = 1234;while ( number != 0 )digit = number%10 ;printf( %d , digit ) ;number = number / 10 ;运行结果：43212. (于蕾 )#include #define N 5void main( )int i;for(i=1;iN;i+)
12、printf(%dn,i*i);运行结果：149163. (于蕾 )#includevoid main( )int i,s,x;s=0;x=15;for(i=1;i=5;i+)if (x%i=0)s= s + i;printf(i=%d,s=%dn,i,s);运行结果：i=6,s=94. (于蕾 )#include void main()int counter=1;while(counter = 5)printf(%d n, counter ); counter+;运行结果：12345 (王伟)#includeint main()int i,sum,m,a;sum=0;m=5;for(i=0;
13、im)sum+=a;printf(sum=%dn,sum);return 0;输入： 2 10 8 3运行结果：sum=186 . (王伟)#includeint main()int i,j,k;for(i=1;i=4;i+)for (j=1;j5-i;j+) printf( );for(k=1;k=i;k+) printf(*);printf(n);return 0;运行结果：*7 . (王伟)#include int main()int i,j;i=1;while(i5)for(j=1;j2*i+1;j+)printf(%c,#);printf(n);i+;return 0;运行结果：#8
14、 . (王伟)#include int main()int i=10,m=0,n=0;doif(i%2!=0)m=m+i;elsen=n+i;i-;while(i=0);printf(m=%d,n=%dn,m,n);return 0;运行结果：m=25,n=309 (王锋)#include void main()int sum=0,n;scanf(%d,&n);while(n=5)sum+=n;n+;printf(sum=%d,sum);输入： 1运行结果：sum=1510 (王锋)#include void main()int i, j;for(i=2;i=0;i-)for(j=1;j=i;
15、j+) printf(*);for(j=0;j=2-i;j+) printf(!);printf(n);运行结果：*!*!11 (王锋)#include void main()int a,b;for(a=1,b=1;a20) break;if(b%4=1)b=b+4;continue;b=b-5;printf(a=%dn,a);运行结果：a=612 (王锋)#include void main( )char k;int i;for(i=1;i3;i+)scanf(%c,&k);switch(k)case 0: printf(anothern);case 1: printf(numbern);输
16、入： 01运行结果：anothernumbernumber13. (宋昕)#include int main()int i, s = 0;for(i = 1; i 10) break;printf(i=%d, s=%dn, i, s);return 0;运行结果：i=3, s=1414. (宋昕)#include void main()char ch;while(ch=getchar()!=n)if (ch=A&ch=a&ch=z) ch=ch-32;printf(%c,ch);输入： ABCdef运行结果：abcDEF15. (宋昕)#include int main ()int a, b;
17、for (a = 1, b = 1 ; a = 9) break;if (b % 3 = 1)b += 3 ;continue ;b -= 5;printf(%d,%dn, a, b);return 0;运行结果：4,1016. (宋昕)#includeint main ()int i = 0,j = 0;while (i 10) i+;while (j+ 10) ;printf(i=%d,j=%dn,i,j); return 0;运行结果：i=10,j=1117. (王勇超)#include stdio.hvoid main( )int i,j,t;for(i=1,j=10;i 4 );运行
18、结果：01010119. (王勇超)#include stdio.hvoid main()int i=7,j;while ( i 2)j = i%2;printf( %d,j );i-;printf( %d,i );运行结果：10101220. (王勇超)#include void main()int i,j,t=0;for(i=3;i0;i-)for(j=0;j4;j+)t+=j;printf(t=%d,t);运行结果：t=18第六章 函数 共 40 道题1. (王伟)#include long fun(int x,int n);int main()int x=3,n=3;long p;p=
19、fun(x,n);printf(p=%ldn,p);return 0;long fun(int x,int n)int i;long p=1;for(i=0;in;i+) p*=x;return p;运行结果： p=272. (王伟)#include int isDigit(char ch);int main()char ch;while(ch=getchar()!=n)if(isDigit(ch) putchar(ch);printf(n);return 0;int isDigit(char ch)if(ch=0 & ch=9) return 1;elsereturn 0;输入： Abc1d
20、23eF45g运行结果： 123453. (王伟)#include void odddivisor(int n);int main()int n;scanf(%d,&n);odddivisor(n);return 0;void odddivisor(int n)int i;for(i=3;i=n/2;i=i+2)if(n%i=0)printf(%5d,i);printf(n);输入： 15运行结果：354. (王伟)#include void print();int a=5;int main()int a=1,b=2;a=a+b;print();printf(%d %dn,a,b);retur
21、n 0;void print()int b=3;printf(%d %dn,a,b);运行结果：5 33 25. (王伟)#include int fun1(int x);void fun2(int x);int main()int x=1;x=fun1(x);printf(%dn,x);return 0;int fun1(int x)x+;fun2(x);return x;void fun2(int x)x+;运行结果：26. (王伟)#include int fun1(int a,int b,int c);int main()int a=11,b=21,c=31;fun1(a,b,c);p
22、rintf(%d %d %dn,a,b,c); return 0;int fun1(int a,int b,int c)a=a+10;b=b+10;c=c+10;return c;运行结果：11 21 317. (王伟)#includevoid fun(int x);int main()fun(7);printf(n);return 0;void fun(int x)if(x/21)fun(x/2);printf(%5d,x);运行结果：378. (王伟)#include void fun(int a);int main()int i,a5=1,2,3;fun(a);for(i=0;i5;i+
23、)printf(%5d,ai);printf(n);return 0;void fun(int a)int i;for(i=0;i5;i+) ai+=5;运行结果：678559. (于蕾)#include void fun ( int k ) ;void main ( )int w = 5 ;fun ( w ) ;printf ( n ) ;void fun ( int k )if ( k0 )fun ( k-1 ) ;printf ( %d , k ) ;运行结果：01234510. (于蕾)#includevoid f1(void);int a=1;void main( )int a=2;
24、f1();int a=3;printf(a2=%dn,a);printf(a3=%dn,a);void f1(void)printf(a1=%dn,a);运行结果：a1=1a2=3a3=211. （于蕾）#includevoid f(int a, int b, int *c)a=20; b=10;*c=a+b;void main()int a=10,b=20,c=30,d=40;f(a,b,&c);printf(%d,%d,%dn,a,b,c);运行结果：10,20,3012. (于蕾)#includevoid swap(int a,int b);void main()int a=2,b=3;
25、printf(a=%d,b=%dn,a,b);swap(a,b);printf(a=%d,b=%dn,a,b);void swap(int a,int b)int c;c=a;a=b;b=c;运行结果：a=2,b=3a=2,b=313. (于蕾)#include void fun(int a,int b,int c);void main()int x=10,y=20,z=30;fun(x,y,z);printf(%d,%d,%dn,x,y,z);void fun(int a,int b,int c)a=456;b=567;c=678;运行结果：10,20,3014. (于蕾)#include
26、float f(int n)int i;float s=0.0;for(i=1;in;i+)s=s+(float)1.0/i;return s;void main()int i;float a=0.0;for(i=1;i3;i+)a=a+f(i);printf(a=%.4fn, a);运行结果：a=1.000015. (于蕾)#include int f(int a);void main()int a=2,i;for(i=0;i3;i+) printf(%d,f(i);int f(int a)int b=0,c=3;b+;c+; return(a+b+c);运行结果：56716. (于蕾)#i
27、ncludeint fun();void main()int i,x;for(i=0;i=2;i+) x=fun();printf(%dn,x);int fun()int x=3;x+;return x;运行结果：417. (王锋)#include float add(float x,float y);void main( )float a,b,c;a=1.0;b=2.0;c=add(a,b);printf(%fn,c);float add(float x,float y)float z; z=x+y; return(z);运行结果：3.00000018. (王锋)#includevoid f
28、un(int x, int cp, int dp) cp=x+;dp=+x;void main(void)int a,c=80, d=-20;a=30;fun(a,c,d);printf(%d,%dn, c,d);运行结果：80,-2019. (王锋)#include int f(int a,int b);void main()int i=2,p;p=f(i,i+1);printf(%dn,p);int f(int a,int b)int c;if(ab)c=1;else if (a=b)c=0;elsec=-1;return (c);运行结果：-120. (王锋)#include int f
29、un(int n)if(n= =1) return 1;else return fun(n-1)+3;void main()int i,j=0;for(i=1;i4;i+)j=j+fun(i); printf(j=%dn,j);运行结果： j=1221. (王锋)#include void f(int x,int y)int t;if(xy)t=x;x=y;y=t;void main()int a=4,b=3,c=5;f(a,b);f(a,c);f(b,c);printf(%d,%d,%d,a,b,c);运行结果：4,3,522. (王锋)#include int age(int n)int
30、c;if(n=1)c=10;elsec=age(n-1)+2;return(c);void main()printf(%d,age(5);运行结果：1823. (王锋)#include void hello_world(void)printf(Hello, world!n);void three_hellos(void)int counter;for (counter =1;counter = 3;counter+) hello_world();void main(void)three_hellos();运行结果：Hello, world!Hello, world!Hello, world!2
31、4. (王锋)#include int f(int a,int b);void main()int x,i=1,k=3;x=f(i,k);printf(x=%d n,x);int f(int a,int b)int M=0;while(b!=0)M=M+a;b-; return M;运行结果：x=3;25. (宋昕)#includef(int b ,int m,int n)int i,s = 0;for(i = m;i n;i+)s += bi;return s;int main()int x,a = 1,2,3,4,5,6,7,8,9, *p = a;x = f(p,3,7);printf(
32、x=%dn,x);return 0;运行结果：x=2226. (宋昕)#include void fun(int i, int j)int x = 7;printf(i = %d; j = %d; x = %dn, i, j, x);int main()int i = 2, x = 5, j = 7;fun(j, 6);printf(i = %d; j = %d; x = %dn, i, j, x);return 0;运行结果：i = 7; j = 6; x = 7i = 2; j = 7; x = 527. (宋昕)#include void f(int a)int i=0;while(ai
33、=10)printf(%d,ai);i+;int main()int a=1,7,17,9,11,34;f(a+1);运行结果：728. (宋昕)#include void add(int x, int y, int z)z = x + y;x = x * x;y = y * y;printf(2) x = %d y = %d z = %dn, x, y, z);int main()int x = 2, y = 3, z = 0;printf(1) x = %d y = %d z = %dn, x, y, z);add(x, y, z);printf(3) x = %d y = %d z =
34、%dn, x, y, z); return 0;运行结果：(1) x =2y =3z =0(2) x =4y =9z =5(3) x =2y =3z =029. (宋昕)#include int x1 = 30, x2 = 40;void sub(int x, int y)x1 = x;x = y;y = x1; int main()int x3 = 10, x4 = 20;sub(x3, x4);sub(x2, x1);printf( %d, %d, %d, %dn, x3, x4, x1, x2);return 0;运行结果：10, 20, 40, 4030. (宋昕)#include i
35、nt x;void cube()x = x * x * x;int main()x = 5;cube();printf( %dn, x);return 0;运行结果：12531. (宋昕)#include invert(int *s, int i, int j)int t;if(i j)invert(s, i + 1,j - 1);t = *(s + i);*(s + i) = *(s + j);*(s + j) = t;void main( )int a6 = 10, 6, 23, -90, 0, 3, i;invert(a, 0, 5);for(i = 0; i 6; i+) printf(%d, , ai); printf(n);运行结果：3,0,-90,23,6,1032. (宋昕)int func(int a3)int i,j,sum=0;for(i=0;i3;i+)for(j=0;j3;j+) aij=i+j; if(i=j)sum = sum+aij; return sum;int main()int a33=1,3,5,7,9,11,13,15,17;int sum;sum=func