Q-16. (middle_num) Write a program to take three numbers and find the middle number among them.

1. #include <stdio.h>
2. 
   
3. #include <limits.h>
4. #include <stdarg.h>
5. 
   
6. /* Function declarations */
7. int max(int args, ...);
8. int min(int args, ...);
9. 
   
10. int main()
11. {
12.     /*
13.      * Demonstrate the use of variable argument list
14.      */
15.     printf("Maximum of three numbers: (10, 30, 20) = %d\n", max(3, 10, 30, 20));
16.     printf("Maximum of five numbers: (5, -45, 4, 60, 100) = %d\n", max(5, -45, 4, 60, 100));
17. 
    
18.     printf("Minimum of four numbers: (-5, 0, 10, 50) = %d\n", min(4, -5, 0, 10, 50));
19.     printf("Minimum of two numbers: (10, 20) = %d", min(2, 10, 20));
20. 
    
21.     return 0;
22. }
23. 
    
24. /**
25.  * Find maximum between two or more integer variables
26.  * @param args Total number of integers
27.  * @param ... List of integer variables to find maximum
28.  * @return Maximum among all integers passed
29.  */
30. int max(int args, ...)
31. {
32.     int i, max, cur;
33.     va_list valist;
34.     va_start(valist, args);
35. 
    
36.     max = INT_MIN;
37. 
    
38.     for(i=0; i<args; i++)
39.     {
40.         cur = va_arg(valist, int); // Get next elements in the list
41.         if(max < cur)
42.             max = cur;
43.     }
44. 
    
45.     va_end(valist); // Clean memory assigned by valist
46. 
    
47.     return max;
48. }
49. 
    
50. /**
51.  * Find minimum between two or more integer variables
52.  * @param args Total number of integers
53.  * @param ... List of integer variables to find minimum
54.  * @return Minimum among all integers passed
55.  */
56. int min(int args, ...)
57. {
58.     int i, min, cur;
59.     va_list valist;
60.     va_start(valist, args);
61. 
    
62.     min = INT_MAX;
63. 
    
64.     for(i=0; i<args; i++)
65.     {
66.         cur = va_arg(valist, int);
67.         if(min > cur)
68.             min = cur;
69.     }
70. 
    
71.     va_end(valist);
72. 
    
73.     return min;
74. }