Compilare: user.c: In function ‘main’: user.c:58:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(m<=(li-l+1)*(li-l+2)/4) vec[gresit++]=k; ^ user.c: In function ‘adev’: user.c:27:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘main’: user.c:34:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &m, &n); ^ user.c:37:13: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &k); ^ user.c:40:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &k); ^ user.c:43:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d%d", &l, &c, &li, &cj, &v); ^