C (programming language)

# C program to print following numbers series 7.5 9.5 15.5 27.5 47.5

**Understanding the Problem**

- The goal is to create a C program that generates and prints the specific number series 7.5, 9.5, 15.5, 27.5, and 47.5.
- This series doesn’t follow a simple arithmetic or geometric progression, so we’ll need to analyze the pattern and implement a custom logic to achieve the desired output.

**Code Structure and Explanation**

C

`#`**include** <stdio.h>
int main() {
float initial_number = 7.5;
float multiplier = 2;
// Print the first number
printf("%.1f ", initial_number);
// Loop 4 times to print the remaining numbers
for (int i = 1; i <= 4; i++) {
// Multiply the previous number by the multiplier and print it
initial_number *= multiplier;
printf("%.1f ", initial_number);
}
return 0;
}

**Explanation:**

**Header Inclusion:**`#include <stdio.h>`

provides input/output functions like`printf`

.**Main Function:**The program execution starts in the`main`

function.**Variable Declaration:**`float initial_number = 7.5;`

: Stores the first number in the series.`float multiplier = 2;`

: Represents the factor used to generate subsequent numbers.

**Printing the First Number:**`printf("%.1f ", initial_number);`

prints the initial number with one decimal place.**Looping for Remaining Numbers:**`for (int i = 1; i <= 4; i++)`

: Iterates 4 times to print the remaining numbers.- Inside the loop:
`initial_number *= multiplier;`

: Multiplies the current number by the multiplier to get the next number in the series.`printf("%.1f ", initial_number);`

: Prints the updated number with one decimal place.

**Return Statement:**`return 0;`

indicates successful program termination.

**Key Points:**

- The series doesn’t follow a standard arithmetic or geometric progression, so custom logic is required.
- The multiplier of 2 is essential to generate the correct sequence.
- The loop iterates 4 times to print the remaining 4 numbers after the initial one.
- The
`%.1f`

format specifier in`printf`

ensures one decimal place in the output. - Consider adding comments within the code to enhance readability and maintainability.