Compilare: user.cpp: In function ‘void cercetare(int)’: user.cpp:99:9: warning: unused variable ‘pt2’ [-Wunused-variable] int pt2 = log2(lim); ^ user.cpp: In function ‘void citire()’: user.cpp:13:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &n, &m, &h, &w); ^ user.cpp:16:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &mat[i][j][0]); ^ user.cpp: In function ‘int main()’: user.cpp:111:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("euclid.in", "r", stdin); ^ user.cpp:112:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("euclid.out", "w", stdout); ^ user.cpp:116:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &teste); ^