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:

1. Header Inclusion: #include <stdio.h> provides input/output functions like printf.
2. Main Function: The program execution starts in the main function.
3. 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.
4. Printing the First Number: printf("%.1f ", initial_number); prints the initial number with one decimal place.
5. 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.
6. 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.