Program that calculates the largest and smallest number, and the average

[Yeyk]

Hello world! I need help with this program, I barely understand something of C++, so, I only got the largest number and the average.. I don't know how to get the smallest number... Help!


#include <stdio.h>

int main() {
int i=0;
float num,largest=0,smallest=0,add=0,average=0;

printf("Get numbers\n");

while (scanf("%f",&num)) {
if (num > largest)
largest = num;

add = add + num;
i++;
}
average = add / (float)i;

printf("Largest = %.2f\n",largest);
printf("Average = %.2f",average);

return 0;
}


It would be awesome if somebody could help me! :)

[Handy Andy]

Hello Yeyk,

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Is this supposed to a C program or a C++ program?

You have an if statement to find the largest that works. Logic would dictate that a similar if statement for the smallest number would be appropriate. I also find that when you define the variable smallest you set this to a large number that you are not likely to use like: 1000 or 100000. The first time through the if statement this will change.

Hope that helps,

Andy

[adam2016]

To get the average is just simple math add all the variables up and divide by the amount of variables

To get the biggest number you could just test that in a for loop create a variable called biggest set it equal to the first number in your array(outside the loop) then use a test condition if array[i] > biggest set biggest equal to the number in array[i]

do the same for smallest but use the less than < operator

[Yeyk]

Hey!! I just did that, but now I need that when it writes a letter or symbol it prints "Error"... besides I don't know how to stop the program when you put the numbers (bc you have to put another character so it can start)

[Handy Andy]

Hello Yeyk,

If I understand what you said you would have to rewrite the while loop and I might consider a do/while loop in its place.

Inside the do/while loop you could use a while loop, I think, to to check the state of "scanf". It it is in a failed state you print an error message, clear the state bits and ask and get new input. when the input and "scanf" is left in a good state the while loop will be exited.

I have not used C in a while, so it will take me some time to convert what I do in C++ to C.

Hope that helps,

Andy