Compilare: main.cpp: In function 'std::vector<int> inter(std::vector<int>, std::vector<int>, int)': main.cpp:47:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(c.size()<=k && i<sza && j<szb){ ~~~~~~~~^~~ main.cpp:51:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(c.size()<=k && i<sza) c.push_back(a[i++]); ~~~~~~~~^~~ main.cpp:52:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(c.size()<=k && j<szb) c.push_back(b[j++]+val); ~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:15:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pitici.in", "r", stdin); ^ main.cpp:16:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pitici.out", "w", stdout); ^ main.cpp:17:24: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(c, 30, stdin); p=-1; ^ main.cpp:21:28: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(c, 30, stdin); p=-1; ^