6-11
1 #include<iostream> 2 3 using namespace std; 4 5 void printStuff(float data) 6 { 7 cout<<"this is the print stuff function."<<endl; 8 } 9 10 void printMessage(float data) 11 { 12 cout<<"the data to be listed is"<<data<<endl; 13 } 14 15 void printFloat(float data) 16 { 17 cout<<"the data to be printed is"<<data<<endl; 18 } 19 20 const float PI=3.1415926; 21 const float TWO_PI=PI*2.0f; 22 23 int main() 24 { 25 void (*functionPointer)(float); 26 printStuff(PI); 27 functionPointer=printStuff; 28 functionPointer(500.50); 29 30 }
不要让今天成为明天的遗憾!