Compilare: user.c: In function ‘dist’: user.c:9:5: warning: type of ‘i’ defaults to ‘int’ [enabled by default] int dist(i, j){ ^ user.c:9:5: warning: type of ‘j’ defaults to ‘int’ [enabled by default] user.c: In function ‘main’: user.c:36:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &m, &n); ^ user.c:38:13: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &v[i].d, &v[i].l); ^