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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.     int len = myStrlen(s);
  12.     char *tmp = (char *)malloc((2 * len + 1) * sizeof(char));
  13.     int i;
  14.     for(i = 0; i < len; i++){
  15.         tmp[i] = s[i];
  16.     }
  17.     for(i = 0; i < len; i++){
  18.         tmp[len + i] = s[len - 1 - i];
  19.     }
  20.     tmp[2 * len] = '\0';
  21.     return tmp;
  22. }
  23.  
  24. int main(){
  25.     char nyuryoku[1024];
  26.     char *kaibun;
  27.     scanf("%s",nyuryoku);
  28.     kaibun = setPalindrome(nyuryoku);
  29.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  30.     free(kaibun);
  31.     return 0;
  32. }
  33.  
  34.  
Success #stdin #stdout 0s 5328KB
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stdin
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abc
stdout
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abc
  -> abccba
https://ideone.com/7qqnQ2
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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