## C Program to calculate sum of First N Natural numbers

### Description

```Get input n and calculate the sum of first n natural numbers.
Input:
5
Output:
15(1+2+3+4+5)```

### Solution

```#include<stdio.h>
int main()
{
int n,i,sum=0;
printf("Enter a number:");
scanf("%d",&n);
for(i=1;i<=n;i++)
{
sum=sum+i;
}
printf("The sum of natural numbers till %d is : %d",n,sum);
return 0;
}```

### Explanation

```Instruction(s) inside the for block{} are executed repeatedly till  the second expression (ifor block are executed unless i becomes greater than n. so value of i (1,2,3,...n)will be added to sum.

after adding all n natural numbers to sum, sum will be printed using printf statement.```

#### Author - Ramesh P Natarajan

Learner, Professor, Technology Trainer, Software Developer and Content Marketer, very much passionate in the field of Software Application Development, Machine Learning and Search Engine Optimization.

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