Segment Fault Post: 302069691

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Top Forums Programming Segment Fault Post 302069691 by Rakesh Ranjan on Tuesday 28th of March 2006 01:15:00 PM

03-28-2006

Registered User

I dare to rectify ur code though I agree with others that ur code shouldn't compile.

Code:

#include <stdio.h>
#include <stdlib.h>
#define max 20

//****************************************************
//     Input Matrix
//****************************************************

void inMatrixAA(int AA[max][max], int row, int col)
{     int i,j;
        for( i = 0; i<row; i++)
           {
               for( j = 0; j<col; j++)
                 scanf("%d",&AA[i][j]);
           }
}

//*****************************************************
//   Print Matrix
//*****************************************************

void prMatrix( int AA[max][max], int row, int col)
{       int i,j;
           for(i =0; i<row; i++)
              {
                 for(j = 0; j<col; j++)
                   printf("%d\n",AA[i][j]);
              }
}

int main(int argc,char *argv[])
   {
       int A[max][max];
       int m,k;
       int ii,jj;
        for (ii = 0; ii<max;ii++)
         {
           for(jj =0;jj<max;jj++)
            {
              A[ii][jj] = 0;
            }
         }
         printf("Enter values for m, k\n");
       scanf("%d%d",&m,&k);
       printf("Input Matrix A");
       inMatrixAA(A, m, k);
       printf("Print Matrix A");
       prMatrix(A, m, k);
       return 0;
   }

It shall compile.
I would like u to advise :
1) In C use constants expressions in specifying the size of array
U may use preprocessors like #define though.
2) Take care with pointers (if u r passing pointer to pointer in
invoking the function then keep the same in defintion of the function)

Hope these help u.

Rakesh Ranjan

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LEARN ABOUT OPENSOLARIS

mlib_vectormaximummag_s32c

mlib_VectorMaximumMag_U8C(3MLIB)			    mediaLib Library Functions				  mlib_VectorMaximumMag_U8C(3MLIB)

NAME

       mlib_VectorMaximumMag_U8C,  mlib_VectorMaximumMag_S8C,  mlib_VectorMaximumMag_S16C, mlib_VectorMaximumMag_S32C, mlib_VectorMaximumMag_F32C,
       mlib_VectorMaximumMag_D64C - find the first element with the maximum magnitude in a vector

SYNOPSIS

       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status mlib_VectorMaximumMag_U8C(mlib_u8 *max,
	    const mlib_u8 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_S8C(mlib_s8 *max,
	    const mlib_s8 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_S16C(mlib_s16 *max,
	     const mlib_s16 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_S32C(mlib_s32 *max,
	     const mlib_s32 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_F32C(mlib_f32 *max,
	     const mlib_f32 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_D64C(mlib_d64 *max,
	     const mlib_d64 *x, mlib_s32 n);

DESCRIPTION

       Each of these functions finds the first element with the maximum magnitude in a complex vector, then puts the real and imaginary  parts	of
       it into max[0] and max[1], respectively.

PARAMETERS

       Each of the functions takes the following arguments:

       max    Pointer to the first element with the maximum magnitude.

       x      Pointer to the first element of the source vector.

       n      Number of elements in the source vector.

RETURN VALUES

       Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_VectorMinimumMag_U8C(3MLIB), mlib_MatrixMaximumMag_U8C(3MLIB), mlib_MatrixMinimumMag_U8C(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007					  mlib_VectorMaximumMag_U8C(3MLIB)