Call of addition, subtraction, multiplication and division of integer type only

Encapsulate a function of addition, subtraction, multiplication and division to call

include <stdio.h>
// Repackaging function （ Three elements ： Return value , parameter list , Function functions ）

// Additive encapsulation 
int add(int data1,int data2,int data3)
{
    
	int result;
	result=data1 + data2+data3;
	return result;	
}

// Subtraction encapsulation 
int sub(int data1,int data2,int data3)
{
    
	int result;
	result=data1 - data2- data3;
	return result;	
}

// Multiplicative encapsulation 
int mul(int data1,int data2,int data3)
{
    
	int result;
	result=data1 * data2 * data3;
	return result;	
}

// Division encapsulation 
int sub(int data1,int data2,int data3)
{
    
	int result;
	result=data1 / data2 / data3;
	return result;	
}



int main()
{
    	
	
	int x;
	int y;
	int z;
	int res;
	printf(" Please enter a number ：\n");
	scanf("%d",&x);
	printf(" Please enter another number ：\n");
	scanf("%d",&y);
	printf(" Please enter another number ：\n");
	scanf("%d",&z);
	
	res=add(x,y,z);
	printf("%d+%d+%d=%d\n",x,y,z,res);
	
	res=sub(x,y,z);
	printf("%d-%d-%d=%d\n",x,y,z,res);
	
	res=mul(x,y,z);
	printf("%d*%d*%d=%d\n",x,y,z,res);
	
	res=sub(x,y,z);
	printf("%d/%d/%d=%d\n",x,y,z,res);
	
	return 0;
}