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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.  
  10. char *setPalindrome(char s[]){ 
  11.     char *tmp; 
  12.     int len = myStrlen(s);
  13.     int i;
  14.  
  15.     tmp = (char *)malloc(sizeof(char) * (2 * len + 1)); 
  16.  
  17.     for(i=0; i<len; i++){
  18.         tmp[i] = s[i];
  19.     }
  20.  
  21.     for(i=0;i<len;i++){
  22.         tmp[len + i] = s[len - 1 - i];
  23.     }
  24.  
  25.     tmp[2 * len] = '\0';
  26.     return tmp;
  27. } 
  28.  
  29. int main(){ 
  30.     int i; 
  31.     char nyuryoku[1024];
  32.     char *kaibun; 
  33.     scanf("%s",nyuryoku); 
  34.     kaibun = setPalindrome(nyuryoku); 
  35.     printf("%s\n  -> %s\n",nyuryoku,kaibun); 
  36.     free(kaibun); 
  37.     return 0; 
  38. }
  39.  
Success #stdin #stdout 0s 5320KB
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https://ideone.com/Gluwtn
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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