Compilare: user.cpp: In function ‘int main()’: user.cpp:64:16: warning: unused variable ‘j’ [-Wunused-variable] int n, m, i, j, count ; ^ user.cpp:66:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &n ) ; ^ user.cpp:69:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &v[i]) ; ^ user.cpp:76:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &m ) ; ^ user.cpp:80:61: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d%d%d", &q[n+i].i, &q[n+i].j, &x, &y ) ; ^