The trick is to use the sign bit void main() { int a = 1; int b = 2;

Write a C program to find the smallest of three integers,
without using any of the comparision operators.

Question Posted / jb

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Answer Posted / jb

The trick is to use the sign bit

void main() {

int a = 1;
int b = 2;
int c = 3;

int maximum = max(max(a,b),c);

}

int max(int a, int b) {

int diff = a - b;
int sign = (diff >> 31) & 0x1;
return a - (sign * diff);

}

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