Compilare: user.cpp: In function ‘int main()’: user.cpp:8:15: warning: unused variable ‘nr’ [-Wunused-variable] int n, i, nr=1, max, mask=1, gg, x, y, a, k, count, j; ^ user.cpp:8:26: warning: unused variable ‘mask’ [-Wunused-variable] int n, i, nr=1, max, mask=1, gg, x, y, a, k, count, j; ^ user.cpp:8:38: warning: unused variable ‘x’ [-Wunused-variable] int n, i, nr=1, max, mask=1, gg, x, y, a, k, count, j; ^ user.cpp:8:41: warning: variable ‘y’ set but not used [-Wunused-but-set-variable] int n, i, nr=1, max, mask=1, gg, x, y, a, k, count, j; ^ user.cpp:8:44: warning: unused variable ‘a’ [-Wunused-variable] int n, i, nr=1, max, mask=1, gg, x, y, a, k, count, j; ^ 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:16:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d", &v[i]); ^