How to print all data from an array in C?

February 18, 2022

I just started with C, i cant find out how to print all values from an array with for loop, wether it is array of strings or integers?

#include <stdio.h>
#include <string.h>

int main()
{

    int array[3][20] = {10, 15, 20};

    for (int i = 0; i < array; i++)
    {
        printf("%d", array[i]);
    }

    return 0;
}

What mistake do i make here?

>Solution :

Since you have a 2-dimensional array, you should use nested loops for each dimension, and access the elements using 2 indexes.

To get the number of elements in an array use sizeof array / sizeof array[0].

for (int i = 0; i < sizeof array / sizeof array[0]; i++) {
    for (int j = 0; j < sizeof array[i] / sizeof array[i][0]; j++) {
        printf("%d ", array[i][j]);
    }
    printf("\n");
}