Compilare: user.cpp: In function ‘int main()’: user.cpp:83:15: warning: unused variable ‘j’ [-Wunused-variable] int n, i, j, k; ^ user.cpp:83:18: warning: unused variable ‘k’ [-Wunused-variable] int n, i, j, k; ^ user.cpp:84:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.cpp:86:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &h[i], &g[i]); ^