Arrays in C/C++

 // Online C compiler to run C program online

#include <stdio.h>

#include<stdlib.h>

#include<malloc.h>



int main() {

    // Write C code here

    // int arr[5]={12,13,7,27,77};

    int arr[]={12,13,7,27,77};

    // arr[0]=12;

    // arr[1]=13;

    // arr[2]=7;

    // arr[3]=27;

    // arr[4]=77;

    int size=sizeof(arr)/sizeof(int);

    // for(int i=0;i<5;i++){

    printf("%d\n",arr[3]);

    arr[3]=97;

    for(int i=0;i<size;i++){

        printf("%d\n",arr[i]);

    }

    printf("%d\n",*arr);

    

    int matrix[3][3]={

    {1,2,3},

    {4,5,6},

    {7,8,9}

    };

    

    for(int i=0;i<3;i++){

        for(int j=0;j<3;j++){

            printf("%d\n",matrix[i][j]);

        }

    }

    printf("\n\n\n");

    int *ar=malloc(5*sizeof(int));

    return 0;

}

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