Compilare: user.cpp: In function ‘int main()’: user.cpp:13:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ^ user.cpp:15:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=1;k<=n;k++) ^ user.cpp:16:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k*(k-1)/2>=q) break; ^ user.cpp:17:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k*(k-1)/2==q) { ^ user.cpp:19:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=n-k+1;i<=(n+n-k+1)/2;i++) ^ user.cpp:23:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ^ user.cpp:28:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=n-k+1;i<=(n+n-k+1)/2;i++) ^ user.cpp:34:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=n-k+1+k*(k-1)/2-q;i>=n-k+2;i--) ^ user.cpp:37:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ^