题解 | 计算单位阶跃函数

#include <stdio.h>

int main() {
    int num = 0;
    
    while(scanf("%d",&num) != EOF){
        if (num > 0) {
            printf("1\n");
        }
        else if (num == 0) {
            printf("0.5\n");
        }
        else {
            printf("0\n");
        }
    }

    return 0;
}