14.Write a program in C to find the maximum of three numbers using nested 'if-else' statements.

Purpose:
The purpose of the program to find the maximum of three numbers using nested if-else statements is to offer a humble and effective way to express the largest value among a set of three numbers. This program can be used in various real-life scenarios where comparisons need to be made between multiple values, such as in grading systems, financial analysis, sports analytics, and manufacturing processes. By precisely classifying the maximum value among the given numbers, the program assistances in decision-making processes, resource allocation, and performance evaluation.

Real-life applications:
1. In a student grading system, a program may determine the highest score on three tests to determine the best student in the class.
2. In a financial program, the program can compare the ROI of three different options to determine the most profitable option.
3. In the sports analysis tool, the program can analyze the performance statistics of three athletes to determine the athlete with the highest overall performance.
4. In a manufacturing environment, the program can compare the performance of three different production lines to determine the most efficient and productive line.

a program in C to find the maximum of three numbers using nested if else statements.

/* C language program to find the maximum of three numbers using nested if else statements.*/
#include <stdio.h>
int main()
{
int num1, num2, num3;
printf("Enter three numbers:\n ");
scanf("%d %d %d", &num1, &num2, &num3);
if (num1 >= num2) {
if (num1 >= num3) {
printf("Maximum number is: %d\n", num1);
} else {
printf("Maximum number is: %d\n", num3);
}
} else {
if (num2 >= num3) {
printf("Maximum number is: %d\n", num2);
} else {
printf("Maximum number is: %d\n", num3);
}
}
return 0;
}

Output
Enter three numbers:
90
15
20
Maximum number is:90

a program in C language to find the maximum of three numbers using nested if else statements.

Explanation
1. The program starts by declaring three integer variables num1, num2 and num3 to store the input numbers.
2. The user is prompted to enter three numbers which are then read using scanf.
3. The program uses nested 'if-else' statements to compare the three numbers and find the maximum among them.
4. The outer if-else statement checks if num1 is greater than or equal to num2. If true it further checks if num1 is greater than or equal to num3. If true it prints num1 as the maximum number. If false it prints num3 as the maximum number.
5. If the outer if-else statement is false it means num2 is greater than num1. It then checks if num2 is greater than or equal to num3. If true, it prints num2 as the maximum number. If false, it prints num3 as the maximum number.
6. Finally, the program returns 0 to indicate successful execution.

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