# include <stdio.h>
void myStrcat(char s[], char t[]){
int i,j;
for(i=0; s[i]!='\0';i++){
;
}for(j=0;t[j]!='\0'; j++){
s[i+j]=t[j];
}
s[i+j]='\0';
return;
}
int main(){
char s[100];
char t[100];
myStrcat(s,t);
return 0;
}
IyBpbmNsdWRlIDxzdGRpby5oPgoKdm9pZCBteVN0cmNhdChjaGFyIHNbXSwgY2hhciB0W10pewoJaW50IGksajsKZm9yKGk9MDsgc1tpXSE9J1wwJztpKyspewoJOwp9Zm9yKGo9MDt0W2pdIT0nXDAnOyBqKyspewoJc1tpK2pdPXRbal07Cn0Kc1tpK2pdPSdcMCc7CnJldHVybjsKfQoKaW50IG1haW4oKXsKICAgIGNoYXIgc1sxMDBdOwogICAgY2hhciB0WzEwMF07CiAgICBzY2FuZigiJXMgJXMiLHMsdCk7CiAgICBwcmludGYoIiVzICsgJXMiLHMsdCk7CiAgICBteVN0cmNhdChzLHQpOwogICAgcHJpbnRmKCIgLT4gJXNcbiIscyk7CiAgICByZXR1cm4gMDsKfQo=