Compilare: main.cpp: In function 'int main()': main.cpp:45:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(IN, "%d", &inputSize); ^ main.cpp:49:45: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(IN, "%d", &input[i].original); ^ main.cpp: In member function 'bool partialFactorisation::operator<(const partialFactorisation&)': main.cpp:35:5: warning: control reaches end of non-void function [-Wreturn-type] } ^