Please help me debug this little C program on dynamic two-dimensional array? [migrated]

Posted by azhi on Programmers See other posts from Programmers or by azhi
Published on 2012-11-11T17:13:15Z Indexed on 2012/11/11 23:12 UTC
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I am a newbie here. I have written a little C program, which is to create a two-dimensional matrix. Here is the code:

#include <stdio.h>
#include <stdlib.h>

int **CreatMatrix(int m,int n){             
  int **Matrix;
  int i;
  Matrix=(int**)malloc(m*sizeof(int*));
  for(i=0;i<m;i++){
    Matrix[i]=(int*)malloc(n*sizeof(int));
  }
  return Matrix;

}

int main(){
int m,n;
int **A;
printf("Please input the size of the Matrix: ");
scanf("%d%d",&m,&n);
A=CreatMatrix(m,n);

printf("Please input the entries of the Matrix, which should be integers!\n");
int i,j;
for(i=0;i<m;i++){
    for(j=0;j<n;j++){
        scanf("%d",&A[i][j]);
    }
}

printf("The Matrix that you input is:\n");
for(i=0;i<m;i++){
    for(j=0;j<n;j++){
        printf("%3d ",A[i][j]);
    }
    printf("\n");
}

for(i=0;i<m;i++)
    free(A[i]);
free(A);

}

I have run it, and it works fine. But I am not sure if it is right? Can anyone help me debug it?

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