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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 l=myStrlen(s);
  12. 	char *tmp=(char *)malloc(sizeof(char)*(2*l+1));
  13. 	if(tmp==NULL){
  14. 		printf("ERROR\n");
  15. 	return 0;
  16. 	}
  17. 	for(int i=0;i<l;i++){
  18. 		tmp[i]=s[i];
  19. 		tmp[l+i]=s[l-i-1];
  20. 	}
  21. 	tmp[2*l]='\0';
  22. 	return tmp;
  23. }
  24.  
  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 5284KB
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  -> aiueooeuia
https://ideone.com/bmtcGF
language:
C (gcc 8.3)
created:
3 hours ago
visibility:
public

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