Compilare: main.cpp: In function 'int main()': main.cpp:9:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < M; i++) { ~~^~~ main.cpp:10:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t j = 0; j < N; j++) { ~~^~~ main.cpp:12:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] fputc(cnt < S ? '1' : '0', out); ~~~~^~~ main.cpp:7:47: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d%d%d", &M, &N, &P, &Q, &S); ^