Compilare: main.c: In function 'main': main.c:10:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("triunghi2.in","r",stdin),freopen("triunghi2.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:10:39: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("triunghi2.in","r",stdin),freopen("triunghi2.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:10:75: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("triunghi2.in","r",stdin),freopen("triunghi2.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~ main.c:12:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d",u+i,v+i,x+i,y+i,w+i,z+i); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:13:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&k,&l); ^~~~~~~~~~~~~~~~~~~