编写一个C程序，使用elseif语句将数字打印为单词

问题

在不使用 switch case 的情况下，如何使用 C 编程语言以文字形式打印给定的数字？

解决方案

在此程序中，我们检查三个条件以用单词打印两位数 -

• if(no<0 || no>99)

  • if(no<0 || no>99)

    输入的数字不是两位数

  • else if(no==0)

    将第一个数字打印为零

  • else if(no>=10 && no<=19)

    用文字打印个位数

  • else if(no>=20 && no<=90)

         if(no%10 == 0)

    用文字打印两位数

  程序

   现场演示

  #include<stdio.h>
  #include<string.h>
  int main(){
     int no;
     char *firstno[]={"zero","ten","eleven","twelve","thirteen", "fourteen","fifteen","sixteen","seventeen", "eighteen","nineteen"};
     char *secondno[]={"twenty","thirty","forty","fifty","sixty", "seventy","eighty","ninty"};
     char *thirdno[]={"one","two","three","four","five","six","seven","eight","nine"};
     printf("enter a number:");
     scanf("%d",&no);
     if(no<0 || no>99)
        printf("enter number is not a two digit number
  ");
     else if(no==0)
        printf("the enter no is:%s
  ",firstno[no]);
     else if(no>=10 && no<=19)
        printf("the enter no is:%s
  ",firstno[no-10+1]);
     else if(no>=20 && no<=90)
        if(no%10 == 0)
           printf("the enter no is:%s
  ",secondno[no/10 - 2]);
     else
        printf("the enter no is:%s %s
  ",secondno[no/10-2],thirdno[no%10-1]);
  return 0;
  }

  输出

  enter a number:79
  the enter no is: seventy nine
  enter a number:234
  enter number is not a two digit number

  来源：https://www.tutorialspoint.com/write-a-c-program-to-print-numbers-in-words-using-elseif-statements