Thread: calloc error

Dear people that know more C than me (ie Everyone)

I am working on a simple bit of C code to fill a dynamic array with specific values and display them in a grid. However, I'm getting stuck at the beginning, when I try to allocate memory for the array. I have checked around for other calloc code, and I'm not sure where I'm making my mistake. When I try to compile my code, I receive an error that says: "incompatible implicit declaration of built-in function 'calloc'"

The code I'm using is as follows:

Code:

#include<stdio.h>
#include<math.h>

main()  {
        int i, j;

        //values to hold row & col size for array & mem size needed
        int col, row, Doubles;

        printf("\nEnter the number of columns desired for your array \n");
        scanf("%d", &col);

        printf("\nEnter the number of rows desired for your array \n");
        scanf("%d", &row);

        Doubles = col * row;

        //declaring the array
       //THIS IS WHERE I'M GETTING THE ERROR
        double *ArrayPtr = (double *) calloc (Doubles,sizeof(double));

        //filling the array with the requested values
        for(i = 0; i < row; i++)
                for(j = 0; j < col; j++)        {
                        *ArrayPtr = i * 100 + col;
                        ArrayPtr ++;
                }

Please let me know if you what I'm doing wrong in my calloc statement. Thank you in advance!

That's why I put "beginner" as one of the tags! Thanks itsme - that fixed it!