// with tcc ---------------------------------------------------------------
Y:\Programming\C>tcc temp.c

Y:\Programming\C>temp.exe
Enter any one keyboard character: a
Enter two integers separated by a space: Numbers input: 0 and 0
Letter input:  Stored at: 000000000013FEEF

Y:\Programming\C>

// with gcc ---------------------------------------------------------------
cygdrive/y/Programming/C>$ gcc temp.c -o temp.exe

cygdrive/y/Programming/C>$ ./temp.exe
Enter any one keyboard character: x
Enter two integers separated by a space: Numbers input: 0 and 0
Letter input: Stored at: 0xffffcc0f

cygdrive/y/Programming/C>$