Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:26:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); i++){ ^ user.cpp: In function ‘int main()’: user.cpp:91:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < w[i].size(); j++){ ^ user.cpp: In function ‘int num()’: user.cpp:54:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(sr, 1, DIM, fin); ^ user.cpp:63:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(sr, 1, DIM, fin); ^ user.cpp: In function ‘int main()’: user.cpp:69:27: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(sr, 1, DIM, fin); ^