各位亲 我是个新手  我们老师布置了个作业，我做的就是不对啊  希望帮帮忙啊 给看看  说说原因啊  
执行的结果不对啊   求解答啊


输入年月日，输出该天是该年中的第几天。
a)        例如输入 2003 年 1 月 5 日，则输出是第 5 天。
b)        例如输入 2000 年 3 月 10 日，则输出是第 70 天。
c)        注意二月份天数的计算




#include
int main()
{
    int a,b,c,t,leap;
    scanf("%d,%d,%d",&a,&b,&c);
    printf("shururiqi:");
    printf("%d",a);
    printf("nian");
    printf("%d",b);
    printf("yue");
    printf("%d",c);

   
    printf("ri\n");
   
    if((a%4==0&&a%100!=0)||(a%400==0))
        leap=1;
    else
        leap=0;
    if(leap=1)
       {
        if(b=1)
            printf("%d",t=c);
        else if(b=2)
            printf("%d",t=31+c);
        else if(b=3)
            printf("%d",t=60+c);
        else if(b=4)
            printf("%d",t=91+c);
        else if(b=5)
            printf("%d",t=121+c);
        else if(b=6)
            printf("%d",t=152+c);
        else if(b=7)
            printf("%d",t=182+c);
        else if(b=8)
            printf("%d",t=213+c);
        else if(b=9)
            printf("%d",t=244+c);
        else if(b=10)
            printf("%d",t=274+c);
        else if(b=11)
            printf("%d",t=305+c);
        else if(b=12)
            printf("%d",t=335+c);
        else
            printf("shurucuowu");
        }
    else(leap=0)
        ;       {// 为什么要加"";""？ 不加就不对
        if(b=1)
            printf("%d",t=c);
        else if(b=2)
            printf("%d",t=31+c);
        else if(b=3)
            printf("%d",t=59+c);
        else if(b=4)
            printf("%d",t=90+c);
        else if(b=5)
            printf("%d",t=120+c);
        else if(b=6)
            printf("%d",t=151+c);
        else if(b=7)
            printf("%d",t=181+c);
        else if(b=8)
            printf("%d",t=212+c);
        else if(b=9)
            printf("%d",t=243+c);
        else if(b=10)
            printf("%d",t=273+c);
        else if(b=11)
            printf("%d",t=304+c);
        else if(b=12)
            printf("%d",t=334+c);
        else
            printf("shurucuowu");     
        }


    return 0;




}

  else(leap=0)
         ;            这里不加(leap=0)；就直接可以了吧，而且等于是==，一个=是赋值......显示什么错误.....
         

干嘛用这么多的if语句啊 转成switch—case试一试 那个比较轻松

值得鼓励~~~else if(b=2)
这种都该是else if(2==b)数字写前面编译器会纠错（少写了一个=）

楼主看看这个行不
#include<stdio.h>
int main()
{
    int a,b,c,d,t;
    scanf("%d,%d,%d",&a,&b,&c);
    if((a%4==0&&a%100!=0)||(a%400==0))
        d=1;
    else
        d=0;
    if(d=1)
       {
        switch(b)
        {
       case 1:
            printf("%d",t=c);
            break;
       case 2:
            printf("%d",t=31+c);
            break;
       case 3:
            printf("%d",t=60+c);
            break;
       case 4:
            printf("%d",t=91+c);
            break;
       case 5:
            printf("%d",t=121+c);
            break;
       case 6:
            printf("%d",t=152+c);
            break;
       case 7:
            printf("%d",t=182+c);
            break;
       case 8:
            printf("%d",t=213+c);
            break;
       case 9:
            printf("%d",t=244+c);
            break;
       case 10:
            printf("%d",t=274+c);
            break;
       case 11:
            printf("%d",t=305+c);
            break;
       case 12:
            printf("%d",t=335+c);
            break;
       default :
            printf("输入错误");
            break;
       }
    }
    else
    {
          switch(b)
          {
            case 1:
                printf("%d",t=c);
                break;
            case 2:
                printf("%d",t=31+c);
                break;
            case 3:
                printf("%d",t=59+c);
                break;
            case 4:
                printf("%d",t=90+c);
                break;
            case 5:
                printf("%d",t=120+c);
                break;
            case 6:
                printf("%d",t=151+c);
                break;
            case 7:
                printf("%d",t=181+c);
                break;
            case 8:
                printf("%d",t=212+c);
                break;
            case 9:
                printf("%d",t=243+c);
                break;
            case 10:
                printf("%d",t=273+c);
                break;
            case 11:
                printf("%d",t=304+c);
                break;
            case 12:
                printf("%d",t=334+c);
                break;
            default :
                printf("error");
                break;

            }
        }


    return 0;

哈哈  做出来  虽然用的方法比较笨   哈哈   谢谢了  各位  分我也不知道怎么分了  哈哈     

怎么显示有一个错误啊 ？、