While loop
While is keyword to declare while loop.
It is used to for repetition execution of
target statement again & again until
the given condition is true .
The syntax of a while loop is:
while (testExpression)
{
statemnt // Body of while loop
}
Here, statement may be a single statement or
a block of statements. The condition
may be any expression, and true is any nonzero value. The loop iterates while
the condition is true.
Flow chart
Note
: while is also called entry loop
Example
#include <stdio.h>
void main ()
{
int a=1;
/* while loop execution */
While (a<5)
{
printf("value of a: %d\n", a);
a++;
}
}
Out put
value of a: 1
value of a: 2
value of a: 3
value of a: 4
value of a: 5
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