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C Exercises: Display the number in reverse order

C For Loop: Exercise-37 with Solution

Write a program in C to display the number in reverse order.

Pictorial Presentation:

 Display the number in reverse order

Sample Solution:

C Code:

#include <stdio.h>

void main(){
    int num,r,sum=0,t;

    printf("Input a number: ");
    scanf("%d",&num);

    for(t=num;num!=0;num=num/10){
         r=num % 10;
         sum=sum*10+r;
    }
printf("The number in reverse order is : %d \n",sum);
}

Sample Output:

Input a number: 12345                                                                                         
The number in reverse order is : 54321 

Flowchart:

Flowchart : Display the number in reverse order.

C Programming Code Editor:

Improve this sample solution and post your code through Disqus.

Previous: Write a program in C to display the such a pattern for n number of rows using a number which will start with the number 1 and the first and a last number of each row will be 1.
Next: Write a program in C to check whether a number is a palindrome or not.

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C Programming: Tips of the Day

Static variable inside of a function in C

The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().

The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.

The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().

Ref : https://bit.ly/3fOq7XP