Question

Write the following code using while loop.

sum=0;

for (k=20; k<100); k=k+2)

sum=sum+k;

count<<"\nSum="<<sum;​

Answer 1

Answer:

While loops. Many computations are inherently repetitive. The while loop enables us to execute a group of statements many times. This enables us to express lengthy computations without writing lots of code.

The following code fragment computes the largest power of 2 that is less than or equal to a given positive integer n.

anatomy of a while loop

TenHellos.java prints "Hello World" 10 times.

PowersOfTwo.java takes an integer command-line argument n and prints all of the powers of 2 less than or equal to n.

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