#include stdio.hint main(void){int n = 3;while (n)printf(%2d is true\\n, n--);printf(%2d is false\\n, n);

编程学习网为您整理以下代码实例，主要实现：什么是值为真？使用整数作为while循环控制器条件，希望可以帮到各位朋友。

#include <stdio.h>
int main(voID)
{
    int n = 3;

    while (n)
        printf("%2d is true\n", n--);
    printf("%2d is false\n", n);

    n = -3;
    while (n)
        printf("%2d is true\n", n++);
    printf("%2d is false\n", n);

    return 0;
}