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C Exercises: Check whether two or more non-negative given integers have the same rightmost digit

C-programming basic algorithm: Exercise-25 with Solution

Write a C program to check whether two or more non-negative given integers have the same rightmost digit.

C Code:

#include <stdio.h>
#include <stdlib.h>
int main(void){    
    printf("%d",test(11, 21, 31));
    printf("\n%d",test(11, 22, 31));
    printf("\n%d",test(11, 22, 33));
    }       
    int test(int x, int y, int z)
         {
           return x % 10 == y % 10 || x % 10 == z % 10 || y % 10 == z % 10;
         }

Sample Output:

1
1
0

Pictorial Presentation:

C Programming Algorithm: Check whether two or more non-negative given integers have the same rightmost digit

Flowchart:

C Programming Algorithm Flowchart: Check whether two or more non-negative given integers have the same rightmost digit

C Programming Code Editor:

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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