Question

Write algorithm and c program to find sum of n natural numbers

Answer 1

The program output is also shown below.

* C program to find the sum of 'N' natural numbers.

int i, num, sum = 0;

printf("Enter an integer number \n");

scanf ("%d", &num);

for (i = 1; i <= num; i++)

sum = sum + i;

printf ("Sum of first %d natural numbers = %d\n", num, sum);

Answer 2

Algorithm and c program to find the sum of n natural numbers is given below .

Explanation:

Algorithm of find the sum of n natural number is given below

Step1:  Declared the variable "i" and sum and initialize sum with 0

Step2 : Read the number of terms u wanted suppose it will stored in "n1".

Step3:  begin the loop i=1 to i<n1

            sum =sum +i

          increment the value of i by 1

Step4: Display sum

Program to find sum of n natural numbers is given below

#include <stdio.h> // header file

int main() // main method

{

int n1,sum=0,i;// variable declaration

printf(" Enter the terms:");

scanf("%d",&n1); // Read the input by user

for(i=1;i<n1;++i) // iterating the loop

{

   sum=sum+i; // adding terms

}

printf("%d",sum);// display sum

   return 0;

}

Output:

Enter the terms:5

10

Following are the description of program:

• Declared a variable n1 ,"i" and also "sum".
• Initialized sum with 0 .
• Read the value by user in n1.
• Iterating the loop to calculating the sum.
• Finally display the sum .

Learn More:

• brainly.in/question/7744519