Question

I need the code in C++ not C. please dont forget to create the menu!!!!

Create a phone book program that allows users to enter names
and phone numbers of friends and acquaintances. Create a
structure to hold contact information and use
to
calloc()
reserve the first memory segment. The user should be able to
add or modify phone book entries through a menu. Use the
function to add contiguous memory segments to the
realloc()
original memory block when a user adds a new phone book
entry.

Answer 1

PROGRAM SCREEN SHOT:

Sample output:

Code to copy:

// header files

#include<stdio.h>

#include<stdlib.h>

// structure that holds the name and number

struct phonebook{

// character array to store name

char contact[15];

// phone number

double phone_num;

};

// main function

int main()

{

// required variables

int t,i,total;

// structure type def

typedef struct phonebook phone;

// pointer array

phone *arr;

// calloc function

arr = (phone *)calloc(1,sizeof(phone));

// display message

printf("Select 1 to add number, otherwise 0:\t");

// take user input

scanf("%d",&t);

i = 1;

// iterate loop

while(t!=0)

{

// display message

printf("Enter the name:\t");

// take input as contact name

scanf("%s",arr[i-1].contact);

// diplay message

printf("Enter the phone no:\t");

// take input as phone number

scanf("%lf",&arr[i-1].phone_num);

// diplay mesasage

printf("Select 1 to add number, otherwise 0:\t");

// take input

scanf("%d",&t);

// increment the value

i++;

// realloc function

arr = (phone *)realloc(arr,i*sizeof(phone));

}

// assign total numbers

total = i;

// iterate loop

for(i=0;i<total-1;i++)

{ // display Name

printf("Name:\t%s",arr[i].contact);

// display phone number

printf("\tPhone no:\t%.0lf\n",arr[i].phone_num);

}

}

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