Compilare: user.cpp: In function ‘void solve()’: user.cpp:55:13: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int i,j,ok,okk; ^ user.cpp: In function ‘void citire()’: user.cpp:15:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&m); ^ user.cpp:17:53: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(j=1;j<=m+1;j++) fscanf(f,"%lf",&a[i][j]); ^