In this C programs, we will learn about how to count all negative numbers of an array.
Required Knowledge
Algorithm to count negative numbers in an array
Let inputArray is an integer array having N elements.
Let inputArray is an integer array having N elements.
- Using a for loop, traverse inputArray from index 0 to N-1.
- For every element inputArray[i], check whether it is negative number or not(inputArray[i] < 0) and increment the counter accordingly.
C program to count number of negative elements in an array
#include <stdio.h>
int main(){
int inputArray[100], elementCount, index, counter=0;
printf("Enter Number of Elements in Array\n");
scanf("%d", &elementCount);
printf("Enter %d numbers \n", elementCount);
for(index = 0; index < elementCount; index++){
scanf("%d", &inputArray[index]);
}
for(index = 0; index < elementCount; index++){
if(inputArray[index] < 0) {
counter++;
}
}
printf("Number of Negative Elements in Array :
%d\n", counter);
return 0;
}
Output
Enter Number of Elements in Array 8 Enter 8 numbers 2 -4 9 10 0 -5 -1 1 Number of Negative Elements in Array : 3
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