# C Exercises: Counts the number of positive and negative numbers

## C Basic Declarations and Expressions: Exercise-27 with Solution

Write a C program that reads 5 numbers and counts the number of positive numbers and negative numbers.

**Pictorial Presetation:**

**C Code:**

```
#include <stdio.h>
int main() {
float numbers[5]; // Declare an array to store 5 numbers
int j, pctr=0, nctr=0; // Declare variables for loop counter, positive count, and negative count
// Prompt user for five numbers and store them in the array
printf("\nInput the first number: ");
scanf("%f", &numbers[0]);
printf("\nInput the second number: ");
scanf("%f", &numbers[1]);
printf("\nInput the third number: ");
scanf("%f", &numbers[2]);
printf("\nInput the fourth number: ");
scanf("%f", &numbers[3]);
printf("\nInput the fifth number: ");
scanf("%f", &numbers[4]);
for(j = 0; j < 5; j++) {
if(numbers[j] > 0) // Check if the number is positive
{
pctr++; // Increment positive count
}
else if(numbers[j] < 0) // Check if the number is negative
{
nctr++; // Increment negative count
}
}
// Print the counts of positive and negative numbers
printf("\nNumber of positive numbers: %d", pctr);
printf("\nNumber of negative numbers: %d", nctr);
printf("\n");
return 0;
}
```

Sample Output:

Input the first number: 5 Input the second number: -4 Input the third number: 10 Input the fourth number: 15 Input the fifth number: -1 Number of positive numbers: 3 Number of negative numbers: 2

**Flowchart:**

**C Programming Code Editor:**

**Previous:** Write a C program that prints all even numbers between 1 and 50 (inclusive).

**Next:** Write a C program that read 5 numbers and counts the number of positive numbers and print the average of all positive values.

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