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C Program to find the Sum of First n Natural numbers
Program to find the sum of first n natural numbers. We will
see two C programs to calculate the sum of natural numbers. In the first C
program we are using for loop for find the sum and in the second program we are
doing the same using while loop.
Program to find sum of natural numbers using for loop
The user enters the value of n and the program calculate the
sum of first n natural numbers using for loop.
int main()
{
int n, count, sum
= 0;
printf("Enter
the value of n(positive integer): ");
scanf("%d",&n);
for(count=1; count
<= n; count++)
{
sum = sum +
count;
}
printf("Sum
of first %d natural numbers is: %d",n, sum);
return 0;
}
Output:
Enter the value of n(positive integer): 6
Sum of first 6 natural numbers is: 21