Compilare: user.cpp: In function ‘int main()’: user.cpp:7:9: warning: unused variable ‘a’ [-Wunused-variable] int a, b, x, y, n, maxx, i, maxim=1; ^ user.cpp:7:12: warning: unused variable ‘b’ [-Wunused-variable] int a, b, x, y, n, maxx, i, maxim=1; ^ user.cpp:7:15: warning: unused variable ‘x’ [-Wunused-variable] int a, b, x, y, n, maxx, i, maxim=1; ^ user.cpp:12:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d", &n); ^ user.cpp:14:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d", &v[i]); ^