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Symmetric check for a matrix.

Discussion in 'C' started by adroit89, Jan 6, 2007.

  1. adroit89

    adroit89 New Member

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    A Program to check whether entered matrix is symmetric or not.
    Code:
    #include<stdio.h>
    #include<conio.h>
    main()
    {
    	int a[10][10],at[10][10],k,i,j,m,n;
    	clrscr();
    	printf("enter the order of matrix");
    	scanf("%d %d",&m,&n);
    	printf("enter the matrix");
    	for(i=0;i<m;i++)
    	{
    		for(j=0;j<n;j++)
    			scanf("%d",&a[i][j]);
    	}
    	for(i=0;i<m;i++)
    	{
    		for(j=0;j<n;j++)
    			at[i][j]=a[j][i];
    	}
    	for(i=0;i<m;i++)
    	{
    		for(j=0;j<n;j++)
    		{
    			if(at[i][j]!=a[i][j])
    				k=1;
    		}
    	}
    	if(k==1)
    		printf("not symmetric");
    	else
    		printf("symmetric");
    	getch();
    }
    
     
  2. shabbir

    shabbir Administrator Staff Member

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    clrscr() gives error in MS compilers. I am not sure about the other compilers.
     
  3. Peter_APIIT

    Peter_APIIT New Member

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    Hello, shabbir. I alos facing the same problem. I have read some of the article mentioned that conio.h is a dos function. That's the MS VC++ 6.0 complaint the error.

    I think the conio.h(clrscr()) is compiled in borland and Turbo++ IDE. BY the way, how to add the file so that my compiler is able to accessed the file(conio.h) in MS VC++ 6.0 .


    Your help is greatly appreciated by me and others.

    Thanks for your help.
     
  4. shabbir

    shabbir Administrator Staff Member

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    conio.h is supported by the VC compiler but its just some functions which are obsolete.
     
  5. Peter_APIIT

    Peter_APIIT New Member

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    Then how to add the clrscr() function so that the VS compiler can accessed the header file.

    Thanks for your help.
     
  6. shabbir

    shabbir Administrator Staff Member

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    clrscr function is not defined in the header file used by the VC compiler and if you manage to use the other header file you will not be able to get the correct implementation.
     
  7. Peter_APIIT

    Peter_APIIT New Member

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    Thanks for your help.
     
  8. billu

    billu New Member

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    Code:
    #include<stdio.h>
    #include<conio.h>
    void main()
    {
    int a[10][10];
    int i,j,n,m,sym=1;
    clrscr();
    printf("Enter the order of matrix\n");
    scanf("%d%d",&m,&n);
    if(m==n)
    {
        printf("Enter the matrix elements\n");
        for(i=0;i<m;i++)
        for(j=0;j<n;j++)
        scanf("%d",&a[i][j]);
    
        for(i=0;i<m;i++)
        for(j=0;j<n;j++)
        {
            if(a[i][j]!=a[j][i])
            {
                sym=0;
            }
        }
        printf("Matrix\n");
        for(i=0;i<m;i++)
        {
            for(j=0;j<n;j++)
            printf("%d\t",a[i][j]);
            printf("\n");
        }
    
        if(sym==1)
            printf("is a symmetric matrix\n");
        else
            printf("is not a symmetric matrix\n");
    }
    else printf("Not a square matrix\n");
    getch();
    }
     
    Last edited by a moderator: Sep 23, 2009
  9. kiddo

    kiddo New Member

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    Instead of using clrscr() from conio.h header,
    you can try "system("cls");" ( without "").

    I'm using dev-C++ and it works.
    clrscr() is not ANSI, so you can't use it on C++ ANSI compiler.
     

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