Compilare: user.c: In function ‘marcheazaDS’: user.c:11:13: warning: ‘return’ with a value, in function returning void [enabled by default] return 0; ^ user.c: In function ‘marcheazaSJ’: user.c:21:11: warning: ‘return’ with a value, in function returning void [enabled by default] return 0; ^ user.c: In function ‘main’: user.c:31:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d", &m, &n); ^ user.c:35:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&a[i][j]); ^