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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 size= len * 2; 
  14.  
  15.     tmp = (char*)malloc(sizeof(char)*(size+1));
  16.     if (tmp == NULL) {
  17.         printf("ERROR\n");
  18.         return 0;
  19.     }
  20.  
  21.     for (int i=0;i<len;i++) {
  22.         tmp[i]=s[i];
  23.     }
  24.  
  25.     for (int i=0;i<len;i++) {
  26.         tmp[len+i]=s[len-i-1];
  27.     }
  28.  
  29.     tmp[size]='\0';
  30.  
  31.     return tmp;
  32. }
  33.  
  34.  
  35.  
  36. int main(){
  37.     int i;
  38.     char nyuryoku[1024]; 
  39.     char *kaibun;   
  40.     scanf("%s",nyuryoku);
  41.     kaibun = setPalindrome(nyuryoku);
  42.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  43.     free(kaibun);
  44.     return 0;
  45. }
  46.  
Success #stdin #stdout 0s 5284KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/XbswOq
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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