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

int main() {
    int *ptr;
    ptr=(int*)calloc(5,sizeof(int));
    ptr[0]=1;
    ptr[1]=3;
    ptr[2]=5;
    ptr[3]=7;
    ptr[4]=9;

    for(int i=0; i<5;i++){
        printf("%d\n",ptr[i]);
    }

    ptr=realloc(ptr,6);
    ptr[0]=2;
    ptr[1]=4;
    ptr[2]=6;
    ptr[3]=8;
    ptr[4]=10;
    ptr[5]=12;
    for(int i=0;i<6;i++) {
        printf("%d\n",ptr[i]);
    }
    return 0;
}

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