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C Exercises: Reverse and print a given number

C Basic Declarations and Expressions: Exercise-57 with Solution

Write a C program to reverse and print a given number.

Pictorial Presentation:

C Programming: Reverse and print a given number.

Sample Solution:

C Code:

#include<stdio.h>
int main()
{
int num,x,r_num=0;
printf("Input a number: ");
scanf("%d",&num);
printf("\nThe original number = %d",num);
while(num>=1)
{
x=num%10;
r_num=r_num*10+x;
num=num/10;
}
printf("\nThe reverse of the said number = %d",r_num);
return 0;
}

Sample Output:

Input a number: 
The original number = 234
The reverse of the said number = 432

Flowchart:

C Programming Flowchart: Reverse and print a given number

C programming Code Editor:

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Next: Write a C program that accepts 4 real numbers from the keyboard and print out the difference of the maximum and minimum values of these four numbers.

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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