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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(sizeof(char) * (len*2 + 1));
  13.  
  14.     for(int i=0; i<len; i++){
  15.         tmp[i] = s[i];
  16.     }
  17.     for(int i=0; i<len; i++){
  18.         tmp[len + i] = s[len - 1 - i];
  19.     }
  20.  
  21.     tmp[len*2] = '\0'; 
  22.     return tmp;         
  23. }
  24.  
  25. int main(){
  26.     char nyuryoku[1024]; 
  27.     scanf("%s", nyuryoku);
  28.  
  29.     char* kaibun = setPalindrome(nyuryoku);
  30.     printf("%s -> %s\n", nyuryoku, kaibun);
  31.  
  32.     free(kaibun);  
  33.     return 0;
  34. }
  35.  
Success #stdin #stdout 0.01s 5304KB
comments (?)
stdin
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abcd
stdout
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abcd -> abcddcba
https://ideone.com/umhCjP
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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