How do you find the sum of n numbers in a for loop?

How do you find the sum of n numbers in a for loop?

Using while Loop

1. #include
2. #include
3. void main()
4. {
5. int num, i, sum = 0; // initialize and declare the local variables.
6. printf(“Enter a positive number : “);
7. scanf(“\%d”, #); // take a value up to which find the sum of n natural number.
8. i = 0;

How do you write a quadratic equation in C?

Program 2: find a b and c in a quadratic equation

1. #include
2. #include
3. int main(){
4. float a,b,c;
5. float d,root1,root2;
6. printf(“Enter quadratic equation in the format ax^2+bx+c: “);
7. scanf(“\%fx^2\%fx\%f”,&a,&b,&c);
8. d = b * b – 4 * a * c;

How do you find the odd and even positioned digits?

Approach:

1. First, calculate the reverse of the given number.
2. To the reverse number we apply modulus operator and extract its last digit which is actually the first digit of a number so it is odd positioned digit.
3. The next digit will be even positioned digit, and we can take the sum in alternating turns.

How do you find the sum of first n numbers?

The formula of the sum of first n natural numbers is S=n(n+1)2 . If the sum of first n natural number is 325 then find n.

How do you find the sum of natural numbers in C?

Sum of Natural Numbers Using while Loop #include int main() { int n, i, sum = 0; printf(“Enter a positive integer: “); scanf(“\%d”, &n); i = 1; while (i <= n) { sum += i; ++i; } printf(“Sum = \%d”, sum); return 0; }

How to find sum of all even numbers in C programming?

If condition checks whether the remainder of the number divided by 2 is exactly equal to 0 or not. If the condition is True, then it is Even number, and the C Programming compiler will add i value to sum. This program to find Sum of all Even Numbers is the same as above.

How to sum and product all digits of an integer number?

This program will read an integer number from the user and calculate the Sum and Product of all digits, in this program we will extract each digit by dividing and getting remainder with 10, add digits in Sum and Multiply the digit in Product.

What is the sum of 100 integers in a for loop?

Enter a positive integer: 100 Sum = 5050. In both programs, the loop is iterated n number of times. And, in each iteration, the value of i is added to sum and i is incremented by 1. Though both programs are technically correct, it is better to use for loop in this case. It’s because the number of iteration is known.