#include <stdio.h>
#include <stdlib.h>
 
int myStrlen(char s[]){
    int i;
    for(i=0;s[i]!='\0';i++);
    return i;
}   //文字数
 
// 関数の中でtmpに対してmallocして
// そこに回文を代入してreturnで返しましょう
char *setPalindrome(char s[]){
	char *tmp;
	//以下に必要な宣言を含めて書いてください
	int a,b;
	int A = myStrlen(s);
	tmp = (char*)malloc((A*2+1)*sizeof(char));
	for(b=0;b < A;b++){
		tmp[b]=s[b];
		}
	for(a=0;a < A;a++){
		tmp[A+a]=s[A-a-1];
		}
	tmp[A*2]='\0';
	return tmp;
}
 
 
//メイン関数はいじる必要はありません
int main(){
    int i;
    char nyuryoku[1024]; //入力
    char *kaibun;   //回文を受け取る
    scanf("%s",nyuryoku);
    kaibun = setPalindrome(nyuryoku);
    printf("%s\n  -> %s\n",nyuryoku,kaibun);
    free(kaibun);
    return 0;
}
 

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

YWJj

abc