Compilare: user.cpp: In function ‘int main()’: user.cpp:45:42: warning: variable ‘lin’ set but not used [-Wunused-but-set-variable] int i,j,ic,jc,ii,maxi=0,st,ok,jj,l,c,lin,col,im,jm; ^ user.cpp:45:46: warning: variable ‘col’ set but not used [-Wunused-but-set-variable] int i,j,ic,jc,ii,maxi=0,st,ok,jj,l,c,lin,col,im,jm; ^ user.cpp:46:30: 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:49:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&a[i][j]); ^