Compilare: main.c: In function 'main': main.c:93:24: warning: unused variable 'p' [-Wunused-variable] int n, m, q, i, j, p, x1, x2, y1, y2; ^ main.c:97:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d ", &n, &m, &q); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:133:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d", &x1, &y1, &x2, &y2); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~