How to write a running C code without main()?
1. Using a macro
#include#define extra mainint
extra(void){printf("freakyfresher");return 0;}
Output:freakyfresher
2. Using Token-Pasting Operator
If we are not allowed to even write main, we can use
token-pasting operator(## basically for concatenation)
#include#define extra m##a##i##nint
extra(){printf("freakyfresher");return 0;}
Output:freakyfresher
How can we sum the digits of a given number in single
statement?
int sumDigits(int no){return no == 0 ? 0 : no%10 +
sumDigits(no/10) ;}
int main(void){printf("%d", sumDigits(132));getchar();return
0;}
Print 1 to 1000 with out loop and conditionals
#includestatic int current = 1;struct print{print() {
std::cout
