temp.cpp

/*
    file: "temp.cpp"

    gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.9)

    $ g++ -std=c++11 -Wall -Wextra -pedantic -O2 temp.cpp -o temp.o
    temp.cpp: In function ‘int main()’:
        temp.cpp:19:28: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘int64_t {aka long int}’ [-Wformat=]
        printf("%lld\n", number);
                            ^
    temp.cpp:20:47: warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’ [-Wformat=]
        printf("sizeof(long) = %u\n", sizeof(long));
                                               ^
    $ ./temp.o
    1
    sizeof(long) = 8
*/


#pragma GCC diagnostic ignored "-Wunused-result"
#include <cstdio>
#include <cstdint>

int main() {
    int64_t number = 1;
    printf("%lld\n", number);
    printf("sizeof(long) = %u\n", sizeof(long));
    return 0;
}