# C Exercises: Display the number of positive values, the minimum value, the maximum value and the average of all numbers

## C Basic Declarations and Expressions: Exercise-64 with Solution

Write a C program that accepts integers from the user until a zero or a negative number, displays the number of positive values, the minimum value, the maximum value, and the average value.

Test data and expected output:

5 2 5 8 9 12 0

**Pictorial Presentation:**

**Sample Solution:**

**C Code:**

```
#include <stdio.h>
int main() {
int a, ctr = 0, min_num, max_num, s = 0;
double avg;
// Prompt user for input
printf("Input a positive integer:\n");
// Read the first input value
scanf("%d", &a);
// Check if the input is positive
if (a <= 0) {
printf("No positive number entered\n");
return 0;
}
// Initialize min_num and max_num with the first input value
min_num = a;
max_num = a;
// Loop to process subsequent inputs
while (a > 0) {
s += a;
ctr++;
max_num = a > max_num ? a : max_num;
min_num = a < min_num ? a : min_num;
// Prompt for the next positive integer
printf("Input next positive integer:\n");
scanf("%d", &a);
}
avg = s / (double) ctr;
// Display the results
printf("Number of positive values entered is %d\n", ctr);
printf("Maximum value entered is %d\n", max_num);
printf("Minimum value entered is %d\n", min_num);
printf("Average value is %0.4lf\n", avg);
return 0;
}
```

Sample Output:

Input a positive integer: Input next positive integer: 15 Input next positive integer: 25 Input next positive integer: 37 Input next positive integer: 43 Number of positive values entered is 4 Maximum value entered is 43 Minimum value entered is 15 Average value is 30.0000

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**Previous:**Write a C program that accepts a positive integer n less than 100 from the user and prints out the sum 1^{4} + 2^{4} + 4^{4} + 7^{4} + 11^{4} + • • • + m^{4} , where m is less than or equal to n. Print appropriate message.

**Next:** Write a C program that prints out the prime numbers between 1 and 200. The output should be such that each row contains a maximum of 20 prime numbers.

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