Compilare: user.cpp: In function ‘int sol(int, int)’: user.cpp:82:20: warning: left operand of comma operator has no effect [-Wunused-value] for(j=i+1;j<=nrr,j<=i+7;j++){ ^ user.cpp: In function ‘int main()’: user.cpp:91:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:93:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&x[i].x,&x[i].y); ^