C Exercises: Check if two given non-negative integers have the same last digit

Last update on May 27 2022 12:19:53 (UTC/GMT +8 hours)

C-programming basic algorithm: Exercise-13 with Solution

Write a C program to check if two given non-negative integers have the same last digit.

C Code:

#include <stdio.h>
#include <stdlib.h>

int main(void){
    printf("%d",test(123, 456));
    printf("\n%d",test(12, 512));
    printf("\n%d",test(7, 87));
    printf("\n%d",test(12, 45));

    }       
  int test(int x, int y)
        {
          return abs(x % 10) == abs(y % 10);
        }

Sample Output:

Pictorial Presentation:

C Programming Algorithm: Check if two given non-negative integers have the same last digit.

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Previous: Write a C program to find the larger value from two positive integer values that is in the range 20..30 inclusive, or return 0 if neither is in that range.
Next: Write a C program to check whether the sequence of numbers 1, 2, 3 appears in a given array of integers somewhere.

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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