Compilare: user.cpp: In function ‘int main()’: user.cpp:13:15: warning: unused variable ‘i’ [-Wunused-variable] int n, m, i, j, lmax, cmax, x, maxx, r; ^ user.cpp:13:18: warning: unused variable ‘j’ [-Wunused-variable] int n, m, i, j, lmax, cmax, x, maxx, r; ^ user.cpp:15:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &n, &m); ^ user.cpp:21:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &x); ^ user.cpp:25:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&x); ^ user.cpp:39:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&x); ^ user.cpp:22:31: warning: ‘maxx’ is used uninitialized in this function [-Wuninitialized] d[0][1]=maxim[0][1]=x=maxx; ^ user.cpp:13:42: warning: ‘r’ may be used uninitialized in this function [-Wmaybe-uninitialized] int n, m, i, j, lmax, cmax, x, maxx, r; ^