C语言-如何打印出输入到数组中的最大数字？

Question

I want to be able to print out the largest age inputted by the user as well as the smallest age.

Also, I noticed my program doesn't include the numbers after the decimal point. It would just say 25.00 for example, rather than 25.25.

Any help is greatly appreciated!

#include "stdafx.h"
#include "stdio.h"

void main()
{
int age[11];
float total = 0;
int i = 1;
float average;

do
{
    printf("# %d: ", i);
    scanf_s("%d", &age[i]);
    total = (total + age[i]);
    i = i + 1;

} while (i <= 10);

average = (total / 10);
printf("Average = %.2f", average);
}

Answer 1

I think it will be helpful. For decimal point you have to declare your array as float . FLT_MAX These macros define maximum value of a float . Before useing FLT_MAX you should inclue float.h header file.

#include <stdio.h>
#include <float.h>

int main(void)
{
float age[11];
float total = 0;
int i = 1;
float average;
float largestInput = 0.0;
float smallestInput = FLT_MAX;

do
{
    printf("# %d: ", i);
    scanf("%f", &age[i]);
    total = total + age[i];
    //here i am checking the largest input
    if (age[i]> largestInput){
     largestInput = age[i];
    }
    //here i am checking the smallest input
    if (age[i] < smallestInput) {
      smallestInput = age[i];
    }
    i = i + 1;
} while (i <= 10);

average = (total / 10);
printf("Average = %.2f\n", average);
printf("Largest Input Is = %.2f\n", largestInput);
printf("Smallest Input IS = %.2f", smallestInput);
return 0;
}

Answer 2

Pseudo-code. Keep two extra variables. long largestInput, smalltestInput.

set largestInput = smalltestInput = age[0];

for (i = 0; i < 10; i++) {
  if age[i]> largestInput{
     largestInput = age[i];
  }
  if age[i] < smallestInput {
      smalltestInput = age[i];
  }
}

Print it as you like

Answer 3

Your code works fine on my system. I've modified your code to not be Windows specific and shown you how to calculate the smallest and largest of the numbers entered. The idea is to constantly compare the current entry to the current smallest and largest number and change smallest and largest as needed. The code below also shows how to start at array index 0.

#include <stdio.h>


int main()
{
    int age[10];
    float total = 0;
    int i = 0;
    float average;
    int large = -9999;
    int small = 9999;

    do
    {
        printf("# %d: ", i+1);
        scanf("%d", &age[i]);       
        total = (total + age[i]);

        if( age[i] < small )
        {
            small = age[i];
        }

        if( age[i] > large )
        {
            large = age[i];
        }

        i++;

    } while (i < 10);

    average = (total / 10.00);
    printf("Smallest = %d Largest = %d \n", small, large);
    printf("Average = %.2f\n", average);
}


# 1: 30
# 2: 40
# 3: 50
# 4: 2
# 5: 3
# 6: 4
# 7: 6
# 8: -1
# 9: 4
# 10: 5
Smallest = -1 Largest = 50 
Average = 14.30