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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 size=myStrlen(s);
  13. 	tmp=(char*)malloc(sizeof(char)*size*2);
  14. 	if(tmp==NULL){
  15. 		printf("ERROR\n");
  16. 		return 0;
  17. 	}
  18. 	for(int i=0;i<size;i++){
  19. 		tmp[i]=s[i];
  20. 	}
  21. 	for(int i=size;i<size*2-1;i++){
  22. 		tmp[i]=s[size*2-2-i];
  23. 	}
  24. 	tmp[size*2-1]='\0';
  25. 	return tmp;
  26. }
  27.  
  28.  
  29. //メイン関数はいじる必要はありません
  30. int main(){
  31.     int i;
  32.     char nyuryoku[1024]; //入力
  33.     char *kaibun;   //回文を受け取る
  34.     scanf("%s",nyuryoku);
  35.     kaibun = setPalindrome(nyuryoku);
  36.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  37.     free(kaibun);
  38.     return 0;
  39. }
  40.  
Success #stdin #stdout 0s 5284KB
comments (?)
stdin
copy 
abcd
stdout
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abcd
  -> abcdcba
https://ideone.com/IdaNls
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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