Answer Posted / vadivelt

1.Get i/p of 101 elements and add all the nos.And say the
result of that Addition is 'sum'.

2.We all know that n(n+1)/2 is formula to calculate the
addition of 'n' numbers.

if n = 100 then n(n+1)/2 give addtion of 1....100.
so say total = n(n+1)/2;

3.Now 'sum' holds the addition of 1....101 nos
And 'total' holds the addition of 1....100 nos

So the repeated no would be.,
Result = sum - total;

Equalent Code is.,

#include<stdio.h>
main()
{
int i, n, sum = 0, a[150], Total;
printf("ENTER SIZE OF ARRAY:\n");
scanf("%d", &n);
printf("\nENTER ELEMENTS OF ARRAY:\n");
for(i = 0; i<n; i++)
{
scanf("%d", &a[i]);
sum = sum + a[i];
}
n = n-1;
Total = (n *(n+1) /2);
printf("\nREPEATED NO: %d",sum - Total);
getch();
}

What are the data types in c++?

984

---

Describe new operator?

1214

---

What are friend classes? What are advantages of using friend classes?

1137

---

What is difference between c++ and c ++ 14?

1110

---

Why do we use iterators?

1130

---

State two differences between C and C++.

1247

---

What is the best c++ ide?

1233

---

How can you create a virtual copy constructor?

1133

---

What is the prototype of printf function?

1234

---

What is a container class?

1209

---

write asingle linked list which read from two list & the do the following 1 sort the prime & nonprime num (prime should be less tn nonprime) 2 each node has a prime num followd by nonprime 3 add a new node into its sutable plce 4 erase the most three duplicated non prime num 5 find the least duplicated prime num

2679

---

Tell me an example where stacks are useful?

1097

---

Difference between pass by value and pass by reference?

1211

---

What is difference between class and function?

1152

---

What is static class data?

1108

---