C Program for Sum Of N Natural Numbers
Find the Sum of N Natural Numbers in C
Given an integer input num, the objective is to write a code to find the Sum of N Natural Numbers in C. To do so we iterate and add all the numbers until num.
Example: Input : 5 Output : 1 + 2 + 3 + 4 + 5 = 15
Algorithm
The Algorithm for the above problem is as follows,
- Step 1. Start
- Step 2. Enter a number (N).
- Step 3. Use “For loop” to iterate upto the user inserted value.
- Step 4. The “For loop” will calculate the sum of the user inserted value.
- Step 5. Stop
Let’s try and understand it better using the Image given below.
C Program for Sum Of N Natural Numbers
#include <stdio.h>
int main()
{
//for initialize variable
int Number, i, Sum = 0;
//to take user input
printf ("\n Kindly Insert an Integer Variable\n");
scanf ("%d", &Number);
//use for loop for these condition
for(i = 1; i <= Number; i++)
{
Sum = Sum + i;
}
//display
printf ("Sum of Natural Numbers = %d", Sum);
return 0;
}
Output
Kindly Insert an Integer Variable : 3 Sum of Natural Numbers = 6
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