#include void main() { int x=2,y; switch(x) { case 1:y=x ; break; case 2:y=-x ; case 3:y=x*3 ; break;case 4:y=4*x;printf(“%d\n”,y);}

#include void main( ) { int k=-3; if (k #include void main(void) {int a1=10,a2=3; float a3=8.0; cout #include reg52.h sbit P1_0 =P1^0; void DELAY(); main() { while(1) { DELAY(); P1_0=~P1_0; } } void 以下程序中,while 循环的次数是#include void main(void){ int i = 0;while (i #include void main( ) { float x,y; scanf(%f,&x); if(x #include void main(){int i,j,a=0;for(i=0;i #include void main( ) { float x,y; scanf(%f,&x); if(x # include void main() { int y=10; while(y--); printf(y=%d,y); } 九九乘法表程序#include void main(){int i,j,a;for(i=1;i #include void main() { int i;int sum=0; for(i=1;i #include void main() { int a[3][3],i,j; for(i=0;i #include void main() { int y=10; do{ y--; } while(--y); printf(%d ,--y); } #include void main() { int a,b,c; for(a=1; a #include void main() { int a,c; a=0; if (a 编程分段函数#include void main(){int x,y;scanf(%d,&x);if(x # include void main( ) { int x = 4 ; do { printf( %d ,x-- ) ; } while( x ) ; } #include void main() { char a1='M',a2='m'; printf(%c ,(a1,a2)); } #include void main(){int a[30];int i;for (i=0,i