// some examples using 2D arrays

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

void readfloats(float[][3], int, int);
void printfloats(float[][3], int, int);

int main(int argc, char** argv) {
    int nums[3][4] = {{2,4,6,8},{1,3,5,7},{5,10,15,20}};
    int i,j;

    float fnums[3][3];

    for (i = 0 ; i < 3 ; i++) {
        for (j = 0 ; j < 4 ; j++)
            printf("%d  ", nums[i][j]);
        printf("\n");
    }
    printf("\n");

    readfloats(fnums, 3, 3);
    printfloats(fnums, 3, 3);

    return (EXIT_SUCCESS);
}

void readfloats(float farray[][3], int rows, int cols) {
    int i, j;

    for (i = 0 ; i < rows ; i++)
        for (j = 0 ; j < cols ; j++) {
            puts("enter a float: ");
            scanf("%f", &farray[i][j]);
        }
}

void printfloats(float farray[][3], int rows, int cols) {
    int i, j;

    for (i = 0 ; i < rows ; i++) {
        for (j = 0 ; j < cols ; j++)
            printf("%7.2f  ", farray[i][j]);
        printf("\n");
    }
}