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();
}

Which programming language is best?

1005

---

What is an inclusion guard?

1219

---

Are c and c++ similar?

1069

---

What are the basics of local (auto) objects?

1161

---

Can recursive program be written in C++?

1250

---

Describe the syntax of single inheritance in C++?

1089

---

Explain rethrowing exceptions with an example?

1042

---

Define what is constructor?

1082

---

What is c++ coding?

1218

---

Which format specifier is used for printing a pointer value?

1071

---

What happens when the extern "c" char func (char*,waste) executes?

1102

---

How does work in c++?

1091

---

Can I have a reference as a data member of a class? If yes, then how do I initialise it?

1247

---

What is the latest c++ version?

1119

---

Explain the purpose of the keyword volatile.

1186

---