C Programming- C Program to Reverse a Number
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C Program to Reverse a Number
This program takes integer input from the user. Then the while loop is used until n != 0 is false (0).
In each iteration of the loop, the remainder when n is divided by 10 is calculated and the value of n is reduced by 10 times.
Inside the loop, the reversed number is computed using:
reverse = reverse * 10 + remainder;
Let us see how the while loop works when n = 2345.
n n != 0 remainder reverse
2345 true 5 0 * 10 + 5 = 5
234 true 4 5 * 10 + 4 = 54
23 true 3 54 * 10 + 3 = 543
2 true 2 543 * 10 + 2 = 5432
0 false - Loop terminates.
Finally, the reverse variable (which contains the reversed number) is printed on the screen.
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