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while loop in C
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Introduction of while loop in C
while loop is defined as the conditional statement which allows to run the blocks of code in a defined number or infinite number of times.
Basically the while loop is used to run the run in repetitive times until the condition is true.
Syntax:
while(condition)
{
// initialization
blocks of Code
// updation
}
Example 1
#include <stdio.h>
int main()
{ int i=1; //intialization
while(i<=5)
{ printf("PrepInsta\n"); i++; //updation }
return 0; }
Output:
PrepInsta PrepInsta PrepInsta PrepInsta PrepInsta
Working of while loop
Initialization:
- It is the starting statement of the while loop which accepts the initialization of expression.
Conditional Statement:
- A conditional statement determines whether the block of code will be executed or not.
- When the condition is satisfied, the loop will end. It will continue to test the condition and check until the block of code under the while loop is satisfied.
Body:
- It is the main part of the code which needs to be executed in every iteration for performing the given condition.
- It refers to a collection of statements which includes variable functions etc.
Updation:
- It is the statement of the while loop which includes the increment and decrement expression according to the conditional statement.
Example 2
#include <stdio.h>
int main() { int i = 1; //initialization
while (i <= 10) { printf("%d\n", i); i++; //updation }
return 0; }
Output:
1 2 3 4 5 6 7 8 9 10
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