Compilare: main.c: In function 'main': main.c:5:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("taxi.in","r",stdin),freopen("taxi.out","w",stdout),scanf("%d",&t); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:34: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("taxi.in","r",stdin),freopen("taxi.out","w",stdout),scanf("%d",&t); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:65: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("taxi.in","r",stdin),freopen("taxi.out","w",stdout),scanf("%d",&t); ^~~~~~~~~~~~~~ main.c:7:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d",&a,&b,&e,&f,&g,&h),i=(e<g?(g-e):(e-g)),j=(f<h?(h-f):(f-h)),c=e<g?e:g,d=f<h?f:h,m=e<g?g:e,n=f<h?h:f; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~