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Chapter 1g - Program Control : While Loops |
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While Loops
A while loop
is like a for loop
without the INITIALIZATION or ITERATION section and is
constructed as follows;
while( CONDITION )
{
BODY
}
The body is executed as long as the condition is True. Here
are 2 examples. In the first one, we are initializing the
variables in an array. In the second one, we are counting the
number of bits that are 1 in a variable.
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Example #1 |
Example #2 |
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#define MAX_X 10
int x;
int x_array[MAX_X];
x = 0;
while( x<MAX_X )
{
x_array[x]
= 0;
x++;
} |
int x;
int y;
int z;
x = 1;
y = 0;
while( x!=0 )
{
if( z
& x) == x )
{
y++;
}
x
<<= 1;
} |
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