C/string.h/strcpy
strcpy: copies *str2 into *str1. *str2 must be a pointer to a null-terminated string
//Declaration: char *strcpy(char *str1, const char *str2);
//Return: returns a pointer to str1.
#include<string.h>
#include<stdio.h>
int main(void){
char str[80];
strcpy(str, "hello");
printf("%s", str);
}
/*
hello*/