c - 带 if 语句的函数

Question

大家好，我是编程新手。我知道函数的工作原理和 if 语句，所以我想知道如何在函数中编写 if & else 语句并向用户显示答案。可能没有任何 goto 语句

代码如下:

  if(year < 1583) //considers if a year input is less than 1583 which is the starting year for this calendar
  {
       printf("\n\nPlease select a year after 1583 \n\n");
       goto YEAR;
       system("cls");
  }
  if(Leap_year(year))//if statement calls Leap Year function
  {
       printf("\t =======================  \n");
       printf("\t*  THIS IS A LEAP YEAR  *\n");      
       printf("\t =======================  \n\n"); 
  }
  else {
       printf("\t   =======================  \n");
       printf("\t*  THIS IS NOT A LEAP YEAR  *\n");
       printf("\t   =======================  \n\n"); 
  }

Answer 1

无论是 C 还是 C#，都可以使用 while 循环来解决。

do
{     
      // You need to prompt for year here.  Your code doesn't show how you do that.
      if (year < 1583)
      {
          printf("\n\nPlease select a year after 1583 \n\n");
          // Note: The user will never see the printf above if you clear the screen right after
          system("cls");
      }
} while (year < 1583);