Compilare: user.cpp: In function ‘int main()’: user.cpp:13:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &r, &n, &k); ^ user.cpp:19:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &r); ^ user.cpp:35:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &r); ^ user.cpp:48:16: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] ma += x; ^ user.cpp:48:16: warning: ‘ma’ may be used uninitialized in this function [-Wmaybe-uninitialized]