#include void heavyComputation() { // The use of volatile prevents compiler optimizations that could remove the loops. volatile long long sum = 0; for (long long i = 0; i < 500000000; ++i) { sum += i; // Simple but expensive loop } } void lightComputation() { // The use of volatile prevents compiler optimizations that could remove the loops. volatile int sum = 0; for (int i = 0; i < 100000; ++i) { sum += i; // Lighter loop } } int main() { heavyComputation(); // Call heavy function once for (int i = 0; i < 1000; ++i) { lightComputation(); // Call light function many times } return 0; }