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PO
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13023927
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2012-10-23T05:10:50.090
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2012-10-23T05:26:24.270
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2012-10-23T05:26:24.270
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1673391
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<p>Try this one. may be helpful to you. </p> <pre><code>#include <stdio.h> #include <stdlib.h> double **read_matrix(int rows, int cols); void print_matrix(int rows, int cols, double **mat); void free_matrix(int rows, double **mat); double **read_matrix(int rows, int cols){ double **mat = (double **) malloc(sizeof(double *)*rows); int i=0,j=0; for(i=0; i<rows; i++) /* Allocate array, store pointer */ mat[i] = (double *) malloc(sizeof(double)*cols); for(i=0; i<rows; i++){ for(j=0; j<cols; j++){ scanf("%lf",&mat[i][j]); } } return mat; } void print_matrix(int rows, int cols, double **mat){ int i=0,j=0; for(i=0; i<rows; i++){ /* Iterate of each row */ for(j=0; j<cols; j++){ /* In each row, go over each col element */ printf("%lf ",mat[i][j]); /* Print each row element */ } printf("\n"); } } void free_matrix(int rows, double **mat){ int i=0; for(i=0;i<rows;i++) free(mat[i]); free(mat); } int main(){ double **matrix; int rows, cols; /* First matrix */ printf("Matrix 1\n"); printf("Enter # of rows and cols: "); scanf("%d%d",&rows,&cols); printf("Matrix, enter %d reals: \n",rows*cols); matrix = read_matrix(rows,cols); printf("Your Matrix\n"); /* Print the entered data */ print_matrix(rows,cols,matrix); free_matrix(rows, matrix); /* Free the matrix */ return 0; } </code></pre> <p>Execution: </p> <pre><code>:~$ gcc exam.c :~$ ./a.out Matrix 1 Enter # of rows and cols: 3 4 Matrix, enter 12 reals: 1 2 3 4 5 6 7 8 9 9 0 1 Your Matrix 1.000000 2.000000 3.000000 4.000000 5.000000 6.000000 7.000000 8.000000 9.000000 9.000000 0.000000 1.000000 </code></pre>
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1. This table or related slice is empty.
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1. POCreating an 2D array using pointer/malloc, and then print it out
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1. PTAnswer
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1. USGrijesh Chauhan
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1. USGrijesh Chauhan
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1. POCreating an 2D array using pointer/malloc, and then print it out
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1. CO@Jenny No there is no seg-fault with this code ..I edited the steps
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  USGrijesh Chauhan

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