Compilare: main.cpp: In function 'int main()': main.cpp:38:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < vctNr[0].size(); j++) ~~^~~~~~~~~~~~~~~~~ main.cpp:40:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < vctNr[1].size(); j++) ~~^~~~~~~~~~~~~~~~~ main.cpp:18:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("in.txt","r",stdin); ^ main.cpp:21:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^ main.cpp:25:36: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(matrice[i] + 1, MAX, stdin); ^