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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int myStrlen(char s[]){
  5.     int i;
  6.     for(i = 0; s[i] != '\0'; i++);
  7.     return i;
  8. }
  9. char *setPalindrome(char s[]){
  10.     char *tmp;
  11.     int len, i;
  12.  
  13.     len = myStrlen(s);
  14.  
  15.  
  16.     tmp = (char *)malloc((len + 1) * sizeof(char));
  17.  
  18.  
  19.     for(i = 0; i < len; i++){
  20.         tmp[i] = s[len - 1 - i];
  21.     }
  22.  
  23.  
  24.     tmp[len] = '\0';
  25.  
  26.     return tmp;
  27. }
  28. int main(){
  29.     int i;
  30.     char nyuryoku[1024]; 
  31.     char *kaibun;        
  32.  
  33.     scanf("%s", nyuryoku);
  34.  
  35.     kaibun = setPalindrome(nyuryoku);
  36.  
  37.     printf("%s\n  -> %s\n", nyuryoku, kaibun);
  38.  
  39.     free(kaibun);
  40.  
  41.     return 0;
  42. }
Success #stdin #stdout 0s 5312KB
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stdin
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abcd
stdout
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abcd
  -> dcba
https://ideone.com/5uHqaV
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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