Why does using the wrong format specifier in C crash my program on Windows 7?

Question

My program is as follows;

#include 
#include 

int main()
{
        char string[] = \"Gentlemen start your engines!\";
                


        

Answer 1

Using incorrect format specifier in printf() invokes Undefined Behaviour. Correct format specifier should be %zu (not %d) because the return type of strlen() is size_t

Note: Length modifier z in %zu represents an integer of length same as size_t