C Exercises: Count number of even elements in a given array of integers
C-programming basic algorithm: Exercise-51 with Solution
Write a C program to count number of even elements in a given array of integers.
C Code:
#include <stdio.h>
#include <stdlib.h>
int main(void){
int array1[] = {1, 2, 5, 7, 9, 10, 12};
int arr_size = sizeof(array1)/sizeof(array1[0]);
printf("%d",test(array1, arr_size));
}
int test(int nums[], int arr_size)
{
int evens = 0;
for (int i = 0; i < arr_size; i++)
{
if (nums[i] % 2 == 0) evens++;
}
return evens;
}
Sample Output:
3
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Flowchart:
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Previous: Write a C program to find the largest value from first, last, and middle elements of a given array of integers of odd length (atleast 1).
Next: Write a C program to compute the sum of values in a given array of integers except the number 17. Return 0 if the given array has no integer.
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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
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