Compilare: main.cpp: In function 'int main()': main.cpp:20:20: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=] fscanf(i, "%d", &n); ^ main.cpp:24:27: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long long int' [-Wformat=] fprintf(o, "%d\n", result); ^ main.cpp:20:21: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(i, "%d", &n); ^