Converting int to char C formula

Question

int num = 65537;
char p = (char)num; //char = 1;

Whats going on here? Is it p=num%(127+128)-1 or p=num%256 or something else? I need to know why p is equal to 1. thanks!

Answer 1

since 65537 is 00000000 00000001 00000000 00000001 in binary, but the char type has only 1 byte, the last byte is considered for the char value, wich is 00000001 = 1