c++ - Why is long long value not printed correctly? -


why long long value not printed expect in following code snippet? 

#include <stdio.h>  int main() {     int x = 1363177921;     long long unsigned y = x * 1000000;     printf("y: %llu\n", y); // why 1363177921000000 not printed?     return 0; }

it's not printing that's @ fault. have integer overflow in:

long long unsigned y = x * 1000000;

change to:

long long unsigned y = x * 1000000ull;

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