# C Program: Print first 10 Fibonacci numbers - While loop

## C While Loop: Exercise-10 with Solution

Write a C program to find and print the first 10 Fibonacci numbers using a while loop.

**Sample Solution:**

**C Code:**

```
#include <stdio.h>
int main() {
int count = 10; // Number of Fibonacci numbers to generate
int firstTerm = 0, secondTerm = 1; // Initialize the first two terms of the sequence
printf("First %d Fibonacci numbers:\n", count);
// Start a while loop to generate Fibonacci numbers
while (count > 0) {
printf("%d, ", firstTerm); // Print the current Fibonacci number
int nextTerm = firstTerm + secondTerm; // Calculate the next Fibonacci number
firstTerm = secondTerm; // Update the first term with the value of the second term
secondTerm = nextTerm; // Update the second term with the calculated next term
count--; // Decrease the count for the next iteration
}
return 0; // Indicate successful program execution
}
```

Sample Output:

First 10 Fibonacci numbers: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34,

**Explanation:**

Here are key parts of the above code step by step:

- Variable initialization:
- count: Number of Fibonacci numbers to generate (set to 10).
- firstTerm and secondTerm: Initialize the first two terms of the Fibonacci sequence.
- Print Statement:
- Prints a message indicating the intent to display the first 10 Fibonacci numbers.
- While Loop (Fibonacci Generation):
- Enters a while loop that continues until 'count' becomes 0.
- Prints the current Fibonacci number ('firstTerm').
- Calculates the next Fibonacci number ('nextTerm') by adding the first and second terms.
- Updates the first and second terms for the next iteration.
- Decreases the count for the next iteration.
- Return Statement:
- Indicates successful program execution.

**Flowchart: **

**C Programming Code Editor:**

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