Compilare: main.c: In function 'main': main.c:18:24: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'int' [-Wformat=] printf("%lld ",c[i][j]); ^ main.c:5:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("rf.in","r",stdin),freopen("rf.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:32: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("rf.in","r",stdin),freopen("rf.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:5:61: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("rf.in","r",stdin),freopen("rf.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~ main.c:8:13: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i][j]),c[i][j]=a[i][j],p[i][j]=i==j?0:1; ^~~~~~~~~~~~~~~~~~~~