Merge array into string

merge.c

#include <stdio.h>
#include <string.h>
#define BUF 64
int main()
{
    char buffer[BUF] = {'a', 'b', 'c'};
    char string[BUF] = "The following says: ";
    char combine[BUF];
    strcpy(combine, string);
    for(int x = 0; x <= 2; x++){
        combine[x+strlen(string)] = buffer[x];
    }
    puts(combine);    # "The following says: abc"
}