Compilare: user.cpp: In function ‘int min(int, int)’: user.cpp:7:28: warning: variable ‘col’ set but not used [-Wunused-but-set-variable] int i, minim=20000000, col; ^ user.cpp: In function ‘int main()’: user.cpp:26:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d", &m, &n); ^ user.cpp:29:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &v[i][j]); ^