Compilare: user.cpp: In function ‘int main()’: user.cpp:23:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i <= m+1; i++) ^ user.cpp:26:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= n; i++) ^ user.cpp:27:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j <= m; j++) ^ user.cpp:42:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int cK = 2; cK <= k; cK++) ^ user.cpp:44:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int l = 1; l <= n; l++) ^ user.cpp:46:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int c = 1; c <= m; c++) ^ user.cpp:58:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= k; i++) ^