Compilare: user.c: In function ‘main’: user.c:45:34: warning: variable ‘kmax’ set but not used [-Wunused-but-set-variable] int cer,an,i,j,k,r,p,s,max=0,kmax; ^ user.c:45:13: warning: unused variable ‘an’ [-Wunused-variable] int cer,an,i,j,k,r,p,s,max=0,kmax; ^ user.c:49:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d",&cer,&n); ^ user.c:55:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d",&v[i][j]); ^