Compilare: user.c: In function ‘Bordare’: user.c:42:10: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.c: At top level: user.c:83:6: warning: return type of ‘main’ is not ‘int’ [-Wmain] void main(void) ^ user.c: In function ‘Citire’: user.c:28:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.c:33:12: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &i, &j); ^ user.c:36:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &ix, &iy, &ox, &oy); ^