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Answer :
C++ places greater emphasis on type checking, compiler can diagnose every difference between C and C++.
1. structures are a way of storing many different values in variables of potentially difference types under the same name.
2. classes and structures make program modular, easier to modify make things compact.
3. useful when a lot of [...]

/*Deletion in the Array*/

#include<stdio.h>
#include<conio.h>
int i,n;
main()
{
int a[100],pos;
void delete(int a[],int,int);
clrscr();
printf("How many elements in the array\n");
scanf("%d",&n);
printf("Enter the element of the array\n");
for(i=0;i<=n-1;i++)
scanf("%d",&a[i]);
printf("On which postion element do you want delete\n");
scanf("%d",&pos);
delete(a,pos,n);
getch();
}
void delete(int a[],int pos,int n)
{
int j,item;
item=a[pos];
for(j=pos;j<=n-1;j++)
{
a[j]=a[j+1];
}
n=n-1;
for(i=0;i<=n-1;i++)
printf("%d\n",a[i]);
}

/*Factorial*/

#include<stdio.h>
#include<conio.h>
int fact(int);
void main()
{
int n,result;
clrscr();
printf("Enter the number");
scanf("%d",&n);
result=fact(n);
printf("\n The factorial of %d is %d",n,result);
getch();
}
int fact(int x)
{
int f;
if(x==1)
[...]