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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. char *setPalindrome(char s[]){
  10. 	int i,size;
  11. 	char *tmp;
  12. 	size = myStrlen(s);
  13.     tmp = (char *)malloc(sizeof(char)*(2*size+1));
  14.     if(tmp == NULL){
  15.         printf("ERROR\n");
  16.         return NULL; 
  17. }
  18.     for(i=0;i<size;i++) tmp[i] = s[i];
  19.     for(i=0;i<size;i++) tmp[i+size] = s[size-i-1];
  20.     tmp[2*size] = '\0';
  21.     return tmp;
  22. }
  23.  
  24. //メイン関数はいじる必要はありません
  25. int main(){
  26.     int i;
  27.     char nyuryoku[1024]; //入力
  28.     char *kaibun;   //回文を受け取る
  29.     scanf("%s",nyuryoku);
  30.     kaibun = setPalindrome(nyuryoku);
  31.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  32.     free(kaibun);
  33.     return 0;
  34. }
  35.  
Success #stdin #stdout 0s 5312KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/mLy1BG
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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