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("joc8.in","r",stdin),freopen("joc8.out","w",stdout),scanf("%d%d",&x,&y); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:34: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("joc8.in","r",stdin),freopen("joc8.out","w",stdout),scanf("%d%d",&x,&y); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:65: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("joc8.in","r",stdin),freopen("joc8.out","w",stdout),scanf("%d%d",&x,&y); ^~~~~~~~~~~~~~~~~~~ main.c:7:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&z); ^~~~~~~~~~~~~~ main.c:12:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^~~~~~~~~~~~~~