# C validating numeric input

Go to the editor Test Data Input number of terms : 10 : The odd numbers are :1 3 5 7 9 11 13 15 17 19 The Sum of odd Natural Number upto 10 terms : 100 Click me to see the solution 9.

: The first 10 natural number is : 1 2 3 4 5 6 7 8 9 10 The Sum is : 55 Click me to see the solution 3.

Write a program in C to display n terms of natural number and their sum.

Go to the editor Test Data : Input the starting range or number : 1 Input the ending range of number : 50 : The Perfect numbers within the given range : 6 28 Click me to see the solution 29.

Write a C program to check whether a given number is an armstrong number or not.

Test Data : Input number of terms to display : 10 : Here is the Fibonacci series upto to 10 terms : 0 1 1 2 3 5 8 13 21 34 Click me to see the solution 36.

Write a program in C to display the such a pattern for n number of rows using a number which will start with the number 1 and the first and a last number of each row will be 1.

Write a program in C to display the multiplication table of a given integer. Write a program in C to display the multipliaction table vertically from 1 to n.

Go to the editor Test Data : Input the number (Table to be calculated) : 15 : 15 X 1 = 15 ... Go to the editor Test Data : Input upto the table number starting from 1 : 8 : Multiplication table from 1 to 8 1x1 = 1, 2x1 = 2, 3x1 = 3, 4x1 = 4, 5x1 = 5, 6x1 = 6, 7x1 = 7, 8x1 = 8 ...

Go to the editor The pattern like : : The even numbers are :2 4 6 8 10 The Sum of even Natural Number upto 5 terms : 30 Click me to see the solution 17.

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