以下程序没有语法问题的是（） A: B: include<;stdio.h>;int main( ){int x , y = 5 ; printf( "%d\n" , x / y ) ; return 0 ;} C: D: include<;stdio.h>;int main( ){int x = 3 ;y = 5 ; printf( "%d\n" , x / y ) ; return 0 ;} E: F: include<;stdio.h>;int main( ){int x = 3 ,y ; printf( "%d\n" , x / y ) ;y = 5; return 0 ;} G: H: include<;stdio.h>;int main( ){int x = 3 , y = 5 ; printf( "%d\n" , x / y ) ; return 0 ;}

执行下面程序，输出结果是（ ）。#include &#91;stdio.h&#93; int main() { int x,y; for(x=1,y=5;x<y;x++) y--; printf("%d\n",x); return 0; } A: 3 B: 5 C: 7 D: 9

阅读下面程序，则执行后的输出结果是______。 #include"stdio.h" main() int x, y, 2; x=1; y=2; z=3; if(x＞y)if(x＞z)printf("%d", x); else printf("%d", y); printf("%d\n"，z);

如下C程序的输出是什么？#include &#91;stdio.h&#93;void Func1 (int x, int y);void Func2 (int *x, int *y); int main() { int x = 3; int y = 4;Func1 (x, y); printf ("x = %d, y = %d\n", x, y);Func2(&x, &y); printf ("x = %d, y = %d\n", x, y);} void Func1 (int x, int y) { x = x + y; y = x - y; x = x - y; printf ("x = %d, y = %d\n", x, y);} void Func2 (int *x, int *y) { *x = *x + *y; *y = *x - *y; *x = *x - *y;;} A: x = 3, y = 4x = 3, y = 4x = 3, y = 4 B: x = 4, y = 3x = 4, y = 3x = 4, y = 3 C: x = 3, y = 4x = 3, y = 4x = 4, y = 3 D: x = 4, y = 3x = 3, y = 4x = 4, y = 3

运行下面程序时，从键盘输入"12,34,9&#91;CR&#93;"，则输出结果是______. #include &#91;stdio.h&#93; void main( ) { int x,y,z; scanf("%d,%d,%d",&x,&y,&z); if (x<y) if (y<z)printf("%d\n",z); else printf("%d\n",y); else if (x<z)printf("%d\n",z); else printf("%d\n",x); } A: 34 B: 12 C: 9 D: 不确定的值