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1 #include <stdio.h> 2 3 void square(int x) { printf("square of %d is %d "??x??x*x); } 4 void cube(int x) { printf("cube of %d is %d "??x??x*x*x); } 5 6 int main() 7 { 8 void (*calcu)(int x); 9 calcu=square; 10 calcu(2); 11 12 return 0; 13 }
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1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Threading.Tasks; 6 7 namespace Delegate 8 { 9 class Program 10 { 11 static void square(int x) { Console.WriteLine("square of {0} is {1}"?? x?? x * x); } 12 static void cube(int x) { Console.WriteLine("cube of {0} is {1}"?? x?? x * x * x); } 13 14 delegate void math(int x); //??????????? 15 16 static void Main(string[] args) 17 { 18 math calcu; 19 calcu += square; 20 calcu(2); 21 Console.ReadKey(); 22 } 23 } 24 }
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