Compilare: main.cpp: In function 'int main()': main.cpp:10:43: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=] fscanf(in, "%d %d", &a, &b) ; ^ main.cpp:10:43: warning: format '%d' expects argument of type 'int*', but argument 4 has type 'long long int*' [-Wformat=] main.cpp:11:54: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=] fprintf(out, "%d\n", std::__gcd(a, b)) ; ^ main.cpp:8:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &test) ; ^ main.cpp:10:45: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &a, &b) ; ^