Based on if nesting and function call

subject ： Get three numbers on the keyboard , Print out the maximum value , Minimum and sub maximum
Ideas ： It can be encapsulated and called based on functions if Nesting of
1. Please enter three numbers （printf、scanf）
2. Define a function k
3.k Compare with these three numbers
4. Finally, function encapsulation and ternary operation are done

Source code

#include <stdio.h>


void printfwelcome()
{
    
	
	
	printf("=====================================\n");
	printf("\n");
	printf("\t Welcome to my program !\n");
	printf("\n");
	printf("=====================================\n");
	
	
	
}




int getTwodata1(int x,int y)
{
    

	return x>y?x:y;
	
}

int getTwodata2(int x,int y)
{
    
	
	return x<y?x:y;
	
}


int getmaxdata(int a,int b,int c)
{
    
	int max;
	max=getTwodata1(a,b);
	max=getTwodata1(max,c);
	
	
	return max;
	
}   



int getmindata(int a,int b,int c)
{
    
	int min;
	min=getTwodata2(a,b);
	min=getTwodata2(min,c);
	
	
	return min;
	
}   


int main()
{
    
	int data1;
	int data2;
	int data3;
	int TheMax;
	int TheMin;
	int k;
	
	
	printfwelcome();
	
	printf(" Please enter three numbers ：\n");
	scanf("%d%d%d",&data1,&data2,&data3);
	
	if(data1>data2)
	{
    
		k=data1;
		data1=data2;
		data2=k;
	}
	if(data1>data3)
	{
    
		k=data1;
		data1=data3;
		data3=k;
	}
	if(data2>data3)
	{
    
		k=data2;
		data2=data3;
		data3=k;
	}
	
	TheMax=getmaxdata(data1,data2,data3);
	TheMin=getmindata(data1,data2,data3);
	
	printf(" The number you entered is ：%d %d %d \n",data1,data2,data3);
	printf("\t\n");
	printf(" The second largest number is ：%d\n",data2);
	printf(" The maximum number is max=%d, The minimum number is min=%d\n",TheMax,TheMin);
	printf(" Enter three numbers , The order from large to small is ：%d>%d>%d\n",TheMax,data2,TheMin);
	printf("done！");
	
	return 0;
}

Running results

D:\C Language \code\ Chapter five functions >a.exe
=====================================

         Welcome to my program !

=====================================
 Please enter three numbers ：
999
23
99
 The number you entered is ：23 99 999

 The second largest number is ：99
 The maximum number is max=999, The minimum number is min=23
 Enter three numbers , From small to large, the order is ：999>99>23
done！