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C Exercises: Check two given integers, and return true if one of them is 30 or if their sum is 30

C-programming basic algorithm: Exercise-3 with Solution

Write a C program to check two given integers, and return true if one of them is 30 or if their sum is 30.

C Code:

#include <stdio.h>
int main(void){
    printf("%d",test(25, 5));
    printf("\n%d",test(20, 30));
    printf("\n%d",test(20, 25));
    }    
   int test(int x, int y)
        {
            return x == 30 || y == 30 || (x + y == 30);
        }

Sample Output:

1
1
0

Pictorial Presentation:

C Programming Algorithm: Check two given integers, and return true if one of them is 30 or if their sum is 30

Flowchart:

C Programming Algorithm Flowchart: Check two given integers, and return true if one of them is 30 or if their sum is 30

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C Programming: Tips of the Day

How does array [100] = {0} set the entire array to 0?

The behavior of this code in C is described in section 6.7.8.21 of the C specification (online draft of C spec): for the elements that don't have a specified value, the compiler initializes pointers to NULL and arithmetic types to zero (and recursively applies this to aggregates).

The behavior of this code in C++ is described in section 8.5.1.7 of the C++ specification (online draft of C++ spec): the compiler aggregate-initializes the elements that don't have a specified value.

Also, note that in C++ (but not C), you can use an empty initializer list, causing the compiler to aggregate-initialize all of the elements of the array:

char array[100] = {};

As for what sort of code the compiler might generate when you do this, take a look at this question: Strange assembly from array 0-initialization

Ref : https://bit.ly/3yxvK5c