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Lỗi biên dịch:

Main.c:8:11: error: unknown type name ‘Test’
 void nhap(Test T[], int &n)
           ^~~~
Main.c:8:25: error: expected ‘;’, ‘,’ or ‘)’ before ‘&’ token
 void nhap(Test T[], int &n)
                         ^
Main.c:21:10: error: unknown type name ‘Test’
 void dem(Test T[], int n)
          ^~~~
Main.c: In function ‘main’:
Main.c:38:2: error: unknown type name ‘Test’; use ‘struct’ keyword to refer to the type
  Test T[100];
  ^~~~
  struct 
Main.c:44:2: warning: implicit declaration of function ‘nhap’ [-Wimplicit-function-declaration]
  nhap(T, n);
  ^~~~
Main.c:45:2: warning: implicit declaration of function ‘dem’ [-Wimplicit-function-declaration]
  dem(T,n);
  ^~~
Main.c:42:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ^~~~~~~~~~~~~~~