C语言实例11：嵌套IF语句

#include <stdio.h>

int main(int argc, char *argv[])
{
    int sex, weight, cubage;
    printf("请给出输血者的性别和体重：");
    scanf("%d,%d", &sex, &weight);

    if(sex >= 0)
    {
        if(weight >= 120)
        {
            cubage = 200;
            printf("此人应该输血： %d毫升\n",cubage);
        }
        else
        {
            cubage = 180;
            printf("此人应该输血： %d毫升\n",cubage);
        }
    }
    else
    {
        if(weight >= 100)
        {
            cubage = 150;
            printf("此人应该输血： %d毫升\n",cubage);
        }
        else
        {
            cubage = 120;
            printf("此人应该输血： %d毫升\n",cubage);
        }
    }

    while(1);
    return 0;
}