Compilare: user.c: In function ‘main’: user.c:123:10: warning: unused variable ‘p’ [-Wunused-variable] int* p = (int*) malloc(sizeof(int) * 1000000000); ^ user.c:116:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^ user.c:119:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d\n", &v[i].n1, &v[i].n2, &v[i].cost); ^