算法竞赛入门经典_4_分支结构程序设计

#include <stdio.h>
int main()
{//鸡兔同笼问题
    int a, b, m, n;
    scanf("%d%d", &m, &n);//m总腿数，n总个数
    a = (4*n - m)/2;
    b = n - a;
    if(m % 2 == 1 || a < 0 || b <0)
        printf("No answer!");
    else
        printf("%d %d\n", a, b);
    return 0;
}

//三整数排序 2017-6-29
#include <stdio.h>

int main()
{
    int a, b, c, t;
    scanf("%d%d%d", &a, &b, &c);
    if(a > b){t = a; a = b; b = t;}
    if(a > c){t = a; a = c; c = t;}
    if(b > c){t = b; b = c; c = t;}
    printf("%d %d %d\n", a, b, c);

    return 0;
}