Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:122:18: warning: unused variable ‘v’ [-Wunused-variable] int i, u, j, v; ^ user.cpp: In function ‘void interleave(int)’: user.cpp:141:29: warning: narrowing conversion of ‘stack[i]’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] heap.push((pair){stack[i], 0}); ^ user.cpp:151:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (curr.ptr < set[curr.pos].size()) { ^ user.cpp: In function ‘int main()’: user.cpp:256:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (u = s = 0; u < set[curr].size(); u++) { ^ user.cpp: In function ‘char getChar(FILE*)’: user.cpp:46:32: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, Dragoste, f); ^ user.cpp: In function ‘int main()’: user.cpp:266:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("control.out", "w", f); ^