Concept behind these four lines of tricky C code

Question

Why does this code give the output C++Sucks? What is the concept behind it?

#include 

double m[] = {7709179928849219.0, 771};

i         


        

Answer 1

The following code prints C++Suc;C, so the whole multiplication is only for the last two letters

double m[] = {7709179928849219.0, 0};
printf("%s\n", (char *)m);