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Lỗi biên dịch:

Main.cc:13:29: error: declaration of ‘a’ as array of references
 void NhapMang(int n, int &a[]){
                             ^
Main.cc: In function ‘void NhapMang(...)’:
Main.cc:14:22: error: ‘n’ was not declared in this scope
  for (int i = 0; i < n; i++){
                      ^
Main.cc:15:16: error: ‘a’ was not declared in this scope
   scanf("%d", &a[i]);
                ^
Main.cc: In function ‘void NhapSL(int&)’:
Main.cc:9:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~