A program in C plus plus using switch statement To find largest number among three variables?

Answer 1

//The following is very simple program that will find the largest of any 3 numbers

#include <iostream>

using namespace std;

int main()

{

int n1, n2, n3, largest;

cout <<"Enter any 3 numbers ";

cin >>n1;

cin >>n2;

cin >>n3;

if(n1 > n2 && n1 > n3)

largest= n1;

else if(n2 >n1 && n2 >n3)

largest= n2;

else

largest= n3;

return 0;

}

Answer 2

The most common way is to use a function that returns the max of two values, passing the result of that into the same function along with the third value. The other solution is to pass all three into a single function call. It makes no real difference which you use as inline expansion would eliminate all the function calls anyway. It's just a question of which is easier to read and understand. The single call is more complex to implement but is easier to call, while the double call is easier to implement but more complex to call. However, the double call can easily be extended to a triple call for the max of 4 numbers, and so on.

#include <iostream>

int max(int x, int y )

{

return(x>y?x:y);

}

int max(int x, int y, int z )

{

return(x>y?x>z?x:z:y>z?y:z);

}

int main()

{

int x=1, y=2, z=3;

std::cout << max(x,y,z) << std::endl;

std::cout << max(max(x,y),z) << std::endl;

return( 0 );

}

Answer 3

int i=0,a,b,c,d;

label:

while(i == 0){

switch(1){

case 1:

if((a>b) && (a>c) && (a>d)){

printf("%d is greater",a);

i++;

goto label;

}

case 2:

if((b>c) && (b>d)){

printf("%d is greater",b);

i++;

goto label;

}

case 3:

if(c>d){

printf("%d is greater",c);

i++;

goto label;

}

case 4:

printf("%d is greater",d);

i++;

goto label;

}

}

Answer 4

#include <iostream.h>

class biggest

{private:

int a,b,c,big;

public:

void getdata(void);

void bigge(void);

void putdata(void);

};

void biggest :: getdata()

{

cout<<"Enter the number"

cin>>a>>b>>c;

}

void biggest :: putdata()

{

cout<<"a="<<a;

cout<<"b="<<b;

cout<<"c="<<c;

cout<<"biggest="<<big;

}

void biggest :: bigge(void)

{

if (a<b && a<c)

{big=a;

cout<<"biggest="<<big;

}

elseif(b<a && b<c)

{

big=b;

cout<<"biggest="<<big;

}

elseif (c<a && c<b)

{big=c;

cout<<"biggest ="<<big;

}

}

int main()

{

biggest b;

b.getdata();

b.bigge();

b.putdata();

return 0:

}