# include <stdio.h>
void myStrcat(char s[], char t[]){
int i,j;
for(i=0;s[i]!='\0';i++){
j=i;
}
for(i=0;t[i]!='\0';i++){
s[j+i]=t[i];
}
}
int main(){
char s[100];
char t[100];
myStrcat(s,t);
return 0;
}
IyBpbmNsdWRlIDxzdGRpby5oPgoKdm9pZCBteVN0cmNhdChjaGFyIHNbXSwgY2hhciB0W10pewoJaW50IGksajsKCWZvcihpPTA7c1tpXSE9J1wwJztpKyspewoJCWo9aTsKCX0KCWZvcihpPTA7dFtpXSE9J1wwJztpKyspewoJCXNbaitpXT10W2ldOwoJfQp9CgppbnQgbWFpbigpewogICAgY2hhciBzWzEwMF07CiAgICBjaGFyIHRbMTAwXTsKICAgIHNjYW5mKCIlcyAlcyIscyx0KTsKICAgIHByaW50ZigiJXMgKyAlcyIscyx0KTsKICAgIG15U3RyY2F0KHMsdCk7CiAgICBwcmludGYoIiAtPiAlc1xuIixzKTsKICAgIHJldHVybiAwOwp9Cg==