visible.c

来自「C源码集」· C语言 代码 · 共 24 行

#include <stdio.h>

int main ()
{

int z;
double a, b;
char c, d;

printf("Enter a number: ");
scanf("%d", &z);

if (z == 0){
	int i = 3, j = 4;
	printf("i = %d and j = %d\n", i, j);

/* i and j only exist if z == 0 and only exist up to the }
   a, b, c and d available inside this block as block is inside function
   can allocate variables wherever an opening brace is used *//

}

return 0;
}