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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 total = len * 2;         
  14.     tmp = (char *)malloc((total + 1) * sizeof(char));
  15.     int i;
  16.     for(i = 0; i < len; i++){
  17.         tmp[i] = s[i];
  18.     }
  19.     for(i = 0; i < len; i++){
  20.         tmp[len + i] = s[len - 1 - i];
  21.     }
  22.     tmp[total] = '\0';
  23.     return tmp;
  24. }
  25.  
  26. int main(){
  27.     char nyuryoku[1024]; 
  28.     char *kaibun;
  29.     scanf("%s", nyuryoku);
  30.     kaibun = setPalindrome(nyuryoku);
  31.     printf("%s\n  -> %s\n", nyuryoku, kaibun);
  32.     free(kaibun);
  33.     return 0;
  34. }
Success #stdin #stdout 0s 5292KB
comments (?)
stdin 
abcd
stdout 
abcd
  -> abcddcba
https://ideone.com/FYN5ke
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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