const structure parameter : structure « Structure « C++ Tutorial

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C++ Tutorial » Structure » structure 
8.1.3.const structure parameter
#include <iostream.h>

struct Time
{
       int hh,mm,ss;
};

void Disp1(struct Time t);
void Disp2(const Time & t);

int main()
{
       Time t1,t2,*p;
       
       t1.hh=10;
       t1.mm=30;
       t1.ss=0;
       t2=t1;  
       t2.hh++;                        
       p = &t2;
    
    cout << "The t2 time is " << p->hh  << ":" << t2.mm << ":"<< t1.ss << endl;

       Disp1(t2);
       Disp2(t2);
       
       return 0;
}

void Disp1(struct Time t)
{
       cout << "The time is " << t.hh <<":" << t.mm << ":"<< t.ss << endl;
}

void Disp2(const Time & t)
{
       cout << "The time is " << t.hh <<":" << t.mm << ":"<< t.ss << endl;
}
The t2 time is 11:30:0
The time is 11:30:0
The time is 11:30:0
8.1.structure
8.1.1.Use memcpy to duplicate structures
8.1.2.Use cin to read data for a structure
8.1.3.const structure parameter
8.1.4.Define structure to record time
8.1.5.structure composition
8.1.6.Using pointers to structure objects: delete the point
8.1.7.Assign one structure to another structure
8.1.8.Use the keyword struct to illustrate a primitive form of class
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