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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=0;
  13. 	len=myStrlen(s);
  14. 	tmp=(char*)malloc(sizeof(char)*len*2+1);
  15. 	if(tmp == NULL){
  16. 	  return NULL;	
  17. 	}
  18.     for(int i=0;i<len;i++) {
  19.         tmp[i]=s[i];
  20. }
  21. 	for(int i=0;i<len;i++){
  22. 	tmp[len+i]=s[len-i-1];
  23. 	}
  24. 	tmp[len*2]='\0';
  25. 	return tmp;
  26. }
  27.  
  28. //メイン関数はいじる必要はありません
  29. int main(){
  30.     int i;
  31.     char nyuryoku[1024]; //入力
  32.     char *kaibun;   //回文を受け取る
  33.     scanf("%s",nyuryoku);
  34.     kaibun = setPalindrome(nyuryoku);
  35.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  36.     free(kaibun);
  37.     return 0;
  38. }
  39.  
Success #stdin #stdout 0s 5276KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/3oGUUP
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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