下面我会给你一道C语言程序，你需要对他进行改错

好的，请给我这道C语言程序。

int main()
{
int a = 10;
int b = 20;
int c = a + b;
printf("The sum of a and b is %d", c)
return 0;
}

这段程序的问题在于最后一行缺少分号，应该改为：

int main()
{
int a = 10;
int b = 20;
int c = a + b;
printf("The sum of a and b is %d", c);
return 0;
}