Compilare: user.c: In function ‘main’: user.c:20:30: warning: unused variable ‘col’ [-Wunused-variable] int n, i, j, nr, m, lin, col; ^ user.c:20:25: warning: unused variable ‘lin’ [-Wunused-variable] int n, i, j, nr, m, lin, col; ^ user.c:20:22: warning: variable ‘m’ set but not used [-Wunused-but-set-variable] int n, i, j, nr, m, lin, col; ^ user.c: In function ‘min’: user.c:15:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘main’: user.c:22:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &n ); ^ user.c:27:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &nr ); ^