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  1. #include <stdio.h>
  2.  
  3. int str_len(const char *s) {
  4.     int len = 0;
  5.     const char *p = s; 
  6.     while (*p != '\0') { 
  7.         len++;
  8.         p++; 
  9.     }
  10.     return len;
  11. }
  12.  
  13. int main() {
  14.     char s[100];
  15.     printf("请输入字符串：");
  16.     gets(s); 
  17.  
  18.     int length = str_len(s);
  19.     printf("字符串长度：%d\n", length);
  20.  
  21.     return 0;
  22. }
Success #stdin #stdout 0s 5312KB
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vgcxyig
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请输入字符串：字符串长度：7
https://ideone.com/a6Mmet
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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