Compilare: main.cpp: In function 'int main()': main.cpp:27:50: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d %d %d", &n, &X, &Y, &querys) ; ^ main.cpp:47:35: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d\n", &k, &p) ; ^