关于if else的使用问题

Question

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>

int main()
{
int year, leap;
printf("请输入年份:");
scanf("%d", &year);
if (year % 4 == 0 && year % 100 != 0)
{
leap = 1;
}
else if (year % 400 == 0)
{
leap = 1;
}
else
{
leap = 0;
}
if (leap = 1)
{
printf("%d 是闰年. \n ", year);
}
else
{
printf(" % d 不是闰年. \n ",year);
}

return 0;
}
家人们，到底是哪里出错了，求解

Answer 1

if (leap = 1)
改为
if (leap == 1)
==才是判断相等，=是赋值