How to include array of struct in my program?

Question

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C++

#include<stdio.h>
#include<string.h>

struct kelompok{
    char idpegawai[5];
	char nama[10];
	int umur;
	
	kelompok(){}
	
	kelompok( const char * id, const char * n, int u )
	{
		strcpy( idpegawai, id );
		strcpy( nama, n );
		umur = u;
	}
	void print()
	{ 
	printf("%s\t  | %s    | %d\n", idpegawai, nama, umur );
	}
};

int main(void)
{
	
	struct kelompok k1( "P001", "Alvionina", 18 );
	struct kelompok k2( "P002", "Stevanny ", 18 );
	struct kelompok k3( "P003", "Joanita  ", 18 );
	struct kelompok k4( "P004", "Revan    ", 18 );
	
	printf("idpegawai | nama         | umur    \n");
	printf("================================\n");
	k1.print();
	k2.print();
	k3.print();
	k4.print();
	printf("================================\n");
	return 0;
}

What I have tried:

Which one i have change to make my program code inti array of struct?
Can anybody help me 😃I'm still confused i try already.

Posted 5-Nov-22 3:13am

jonathan legends

Updated 5-Nov-22 10:43am

merano99

v2

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3 solutions

Solution 2

The program currently looks more like C than C++. With C++ it would make sense to include <iostream>, <string> and <vector>.
Instead of struct, class would be better and the variables declared as private.
String processing is much easier and safer

C++

// strcpy(idpegawai, id);
idpegawai =id;

and also the loop in the main program is much easier.

C++

int main(void)
{
	vector <class kelompok> kel;

	kel.push_back({ "P001", "Alvionina", 18 });
	kel.push_back({ "P002", "Stevanny", 18 });
	kel.push_back({ "P003", "Joanita", 18 });
	kel.push_back({ "P003", "Joanita", 18 });
	kel.push_back({ "P004", "Revan", 18 });

	cout << "idpegawai\t| nama\t| umur\n";
	cout << "================================\n";

	for (auto it=kel.begin();  it != kel.end(); ++it) 
	{
		it->print();
	}

	cout << "================================\n";
	return 0;
}

Posted 5-Nov-22 6:54am

merano99

Comments

Richard MacCutchan 5-Nov-22 13:49pm

It's fairly obviously complete C. The tags are not always a good indicator of the language type, especially with all the different versions.

merano99 6-Nov-22 3:03am

For me the tags indicate what it should be or what solution is desired. If something completely different appears under "What I have tried:" I assume that the questioner has problems to implement it in the desired environment or is not even aware that his approach does not fit. With C and C++ there is however as well known a large intersection.
I am not sure if it would be acceptable to simply delete or ignore the possibly wrong tags. I would only do that if it is obviously wrong or incorrect.

Richard MacCutchan 6-Nov-22 3:17am

I agree, but not everyone who opens a question checks the tags carefully.

Solution 3

One small thing, to continue with what Richard did :

C++

struct kelompok kel[] = {
    { "P001", "Alvionina", 18 },
    { "P002", "Stevanny",  18 },
    { "P003", "Joanita",   18 },
    { "P004", "Revan",     18 },
    { "", "", -1 }
};

and instead of padding the names with spaces, change the print method in kelompok to specify the width in the format string :

C++

void print()
{
    printf( "%s     | %9s | %d\n", idpegawai, nama, umur );
}

I prefer to avoid printing tabs because they can be problematic.

Posted 5-Nov-22 10:43am

Rick York

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Richard MacCutchan · Accepted Answer · 2022-11-05T03:38:00

Solution 1

Try this:

C++

int main()
{
    struct kelompok kel[] = {
        { "P001", "Alvionina", 18 },
        { "P002", "Stevanny ", 18 },
        { "P003", "Joanita ", 18 },
        { "P004", "Revan ", 18 },
        { "", "", -1 }
    };


    printf("idpegawai | nama | umur \n");
    printf("================================\n");

    for (int index = 0; kel[index].umur != -1; ++index)
    {
        kel[index].print();
    }
    printf("================================\n");

[edit]
Added the actual array name.
[/edit]

Posted 5-Nov-22 3:38am

Richard MacCutchan

Updated 5-Nov-22 4:34am

v3

Comments

jonathan legends 5-Nov-22 9:53am

Not work man 😟

Richard MacCutchan 5-Nov-22 10:15am

Oops, I forgot to put a name on the array.

It would have helped if you had provided the actual error message, instead of just saying, "Not work man".

jonathan legends 5-Nov-22 10:20am

Where i have input the code? After int main() or berore int main?

Richard MacCutchan 5-Nov-22 10:37am

Just replace the four lines you have with the array I coded above. I have also added a final line to mark the end of the array. And added a simple loop to print any number of lines. Just ensure that the line

        { "", "", -1 }

is always the last one of the set.

jonathan legends 5-Nov-22 14:06pm

Owhh that is a final line of the array? I just know that. Thank u so much man... Its done. God bless 😇🙏