Compilare: user.cpp: In function ‘int main(int, const char**)’: user.cpp:53:28: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long unsigned int’ [-Wformat=] fprintf(fOut, "%d\n", res); ^ user.cpp:61:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(res == P) { ^ user.cpp:63:27: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long unsigned int’ [-Wformat=] fprintf(fOut, "%d\n", i); ^ user.cpp:47:7: warning: unused variable ‘OK’ [-Wunused-variable] bool OK = false; ^ user.cpp:49:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fIn,"%d", &P); ^