Compilare: user.c: In function ‘main’: user.c:49:19: warning: unused variable ‘jj’ [-Wunused-variable] int n,i,j,k,x,jj; ^ user.c:49:17: warning: unused variable ‘x’ [-Wunused-variable] int n,i,j,k,x,jj; ^ user.c:50:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("sistem.in","r",stdin); ^ user.c:51:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("sistem.out","w",stdout); ^ user.c:52:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.c:69:33: warning: array subscript is above array bounds [-Warray-bounds] comb[i][0][C]=comb[0][i][C]=1; ^ user.c:69:19: warning: array subscript is above array bounds [-Warray-bounds] comb[i][0][C]=comb[0][i][C]=1; ^ user.c:70:15: warning: array subscript is above array bounds [-Warray-bounds] comb[0][0][C]=0; ^