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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int a;
  5.     printf("请输入一个三位数：");
  6.     scanf("%d", &a);
  7.  
  8.     // 先去掉个位，再对10取余
  9.     int shi = (a / 10) % 10;
  10.  
  11.     printf("十位数是：%d\n", shi);
  12.     return 0;
  13. }
  14.  
Success #stdin #stdout 0s 5324KB
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stdin
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Standard input is empty
stdout
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请输入一个三位数：十位数是：6
https://ideone.com/rcLyoB
language:
C++ (gcc 8.3)
created:
18 hours ago
visibility:
public

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