在三个数字中找到最大数字的C程序

给定三个数字A，B和C；任务是在三个中找到最大的数字。

例子：

Input: A = 2, B = 8, C = 1
Output: Largest number = 8

Input: A = 231, B = 4751, C = 75821
Output: Largest number = 75821

在以下程序中，找到三个数字中最大的一个， $if$ ， $if-else$ ， $nested if-else$和$Ternary operator$被使用。

查找三个数字中最大的算法：

1. Start
2. Read the three numbers to be compared, as A, B and C.
3. Check if A is greater than B.

  3.1 If true, then check if A is greater than C.
    3.1.1 If true, print 'A' as the greatest number.
    3.1.2 If false, print 'C' as the greatest number.

  3.2 If false, then check if B is greater than C.
    3.1.1 If true, print 'B' as the greatest number.
    3.1.2 If false, print 'C' as the greatest number.
4. End

找到三个数字中最大的一个流程图：

下面是在三个数字中找到最大值的C程序：

示例1：仅使用if语句查找最大数目。

#include 
  
int main()
{
    int A, B, C;
  
    printf("Enter the numbers A, B and C: ");
    scanf("%d %d %d", &A, &B, &C);
  
    if (A >= B && A >= C)
        printf("%d is the largest number.", A);
  
    if (B >= A && B >= C)
        printf("%d is the largest number.", B);
  
    if (C >= A && C >= B)
        printf("%d is the largest number.", C);
  
    return 0;
}

输出：

Enter the numbers A, B and C: 2 8 1 
8 is the largest number.

示例2：使用if-else语句查找最大数量。

#include 
int main()
{
    int A, B, C;
  
    printf("Enter three numbers: ");
    scanf("%d %d %d", &A, &B, &C);
  
    if (A >= B) {
        if (A >= C)
            printf("%d is the largest number.", A);
        else
            printf("%d is the largest number.", C);
    }
    else {
        if (B >= C)
            printf("%d is the largest number.", B);
        else
            printf("%d is the largest number.", C);
    }
  
    return 0;
}

输出：

Enter the numbers A, B and C: 2 8 1 
8 is the largest number.

示例3：使用嵌套的if-else语句查找最大数目。

#include 
int main()
{
    int A, B, C;
  
    printf("Enter three numbers: ");
    scanf("%d %d %d", &A, &B, &C);
  
    if (A >= B && A >= C)
        printf("%d is the largest number.", A);
  
    else if (B >= A && B >= C)
        printf("%d is the largest number.", B);
  
    else
        printf("%d is the largest number.", C);
  
    return 0;
}

输出：

Enter the numbers A, B and C: 2 8 1 
8 is the largest number.

示例4：使用三元运算符查找最大数。

#include 
int main()
{
    int A, B, C, largest;
  
    printf("Enter three numbers: ");
    scanf("%d %d %d", &A, &B, &C);
  
    largest = A > B ? (A > C ? A : C) : (B > C ? B : C);
  
    printf("%d is the largest number.", largest);
  
    return 0;
}

输出：

Enter the numbers A, B and C: 2 8 1 
8 is the largest number.

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