#include <stdio.h>
#include <stdlib.h>
int myStrlen(char s[]){
int i;
for(i=0;s[i]!='\0';i++);
return i;
}
// 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;
int len=myStrlen(s);
int len_k=len*2;
tmp
=(char*)malloc((sizeof(char))*len_k
+1); if(tmp==NULL){
return 0;
}
for(int i=0;i<len;i++){
tmp[i]=s[i];
}//前半
for(int i=0;i<len;i++){
tmp[len_k-1-i]=s[i];
}//後半
s[len_k]='\0';
return tmp;
}
//メイン関数はいじる必要はありません
int main(){
char nyuryoku[1024]; //入力
char *kaibun; //回文を受け取る
kaibun = setPalindrome(nyuryoku);
printf("%s\n -> %s\n",nyuryoku
,kaibun
); return 0;
}
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