In C storing values that start with zero get mutated, why?

Question

For example:

int main(){

    int x = 01234567;

    printf("\n%d\n",x);

    return 0;

}

The following code produces: 342391

If I didn't include the 0 at the beginning, the value x would be 1234567, why does C store the value this way and is there any way to get it from not doing this?

Answer 1

Because numbers starting with 0 are represented as octal numbers. You cannot really modify this behavior, simply do not include the zero at the beginning.