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For Loop in C

What is for loop ?

A for loop in C is a control flow statement that allows code to be executed repeatedly based on a condition. The loop is particularly useful for iterating a fixed number of times or over a range of values.

syntax of for loop :

The syntax of a for loop in C is as follows:
for (initialization; condition; increment) { // Code to be executed repeatedly }

Components :

Initialization : This is executed only once, at the beginning of the loop. It usually initializes one or more loop counters.
Condition : This expression is evaluated before each iteration of the loop. If the condition is true, the loop body is executed. If it is false, the loop terminates.
Increment : This is executed after each iteration of the loop body. It usually increments or decrements the loop counter.

Example :

Here is a simple example of a for loop in C that prints numbers from 1 to 10 :

C Code

													
                                                      
#include <stdio.h>
main() 
{
	int i;
    for (i = 1; i <= 10; i++)
    {
        printf("%d ", i);
    }
}
                                                       

													
												

Output :
1 2 3 4 5 6 7 8 9 10

Explanation of the Example :
Initialization : int i = 1; initializes the loop counter i to 1.
Condition : i <= 10; checks if i is less than or equal to 10. If true, the loop body executes.
Increment : i++ increments the loop counter i by 1 after each iteration.
During each iteration, printf("%d ", i); prints the current value of i. The loop continues until the condition i <= 10 is false.

Problems & Solutions :

C Code

													# Write a program to find the factorial of 5. The Factorial function (symbol: !) means to multiply a series of descending natural numbers. Examples- 5! =5*4*3*2*1
                                                      
#include<stdio.h>
main()
{
	int n,i,f=1;
	printf("Enter a no:");
	scanf("%d",&n);
	for (i=1; i<=n; i++)
	{
		f=f*i;
	}
	printf("The factorial is=%d",f);
}
                                                       

													
												

Output :
Enter a no:5
The factorial is=120

C Code

													# Write a program to find the sum of any ten natural numbers.
                                                      
#include<stdio.h>
main()
{
	int i,r,n,s=0;
	printf("enter the range:");
	scanf("%d",&r);
	for(i=1; i<=r; i++)
	{
		scanf("%d",&n);
		s=s+n;
	}
	printf("Sum=%d",s);
	
}
                                                       

													
												

Output :
enter the range:10
1 2 3 4 5 6 7 8 9 10
Sum=55

C Code

													# Write a program to print a numbers from Fibonacci series. In Fibonacci series, next number is the sum of previous two numbers. 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89.

                                                      
#include<stdio.h>
main()
{
	int i,a=0,b=1,c;
	printf("%d ",a);
	printf("%d ",b);
	for(i=1; i<=10; i++)
	{
		c=a+b;
     	printf("%d ",c);
	    a=b;
	    b=c;
}
}
                                                       

													
												

Output :
0 1 1 2 3 5 8 13 21 34 55 89

Conclusion :

The for loop is a powerful and flexible tool in C for iterating over a range of values or executing code a fixed number of times. Understanding its syntax and variations allows you to handle many programming tasks efficiently.

For Loop in C

What is for loop ?

syntax of for loop :

Components :

Example :

Problems & Solutions :

Conclusion :

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