Question

C++ programming

please i need all codes in this homework

Homework

1) Call foo() three times to print below.

1 2

3 4

5 6

2) Modify the calculator in lect16 as follows using argument-passing functions.

....................

// function prototypes

void show_menu();

void add(int x, int y);

void sub(int x, int y);

.............

// function definitions

void main(){

   int s;

   for(;;){

      show_menu();

      scanf(“%d”, &s);

      if (s==1){

          int x, y;

          printf(“enter two numbers\n”);

          scanf(“%d %d”, &x, &y);

          add(x, y);

      }else if (s==2){

          ...............

      }

      .................

   }

}

void show_menu(){

   printf(“1. add 2. sub 3. square 4. factor_of 5. power 6. factor 7. quit\n”);

   printf(“select operation\n”);

}

void add(int x, int y){

// print x+y

   int z;

   z=x+y;

   printf(“the sum is %d\n”, z);

}

void sub(int x, int y){

// print x-y

   .........

}

void square(int x){

// print x*x

   ........

}

void power(int x, int y){

// print x*x*...*x (y times)

   ........

}

void factor_of(int x, int y){

// if x is a factor of y, print “x is a factor of y”

// otherwise “x is not a factor of y”

// for example if x=3, y=12, x is a factor of y

// because 12%3 = 0

   .......

}

void factor(int x){

// display all factors of x

    ...................

}

Answer 1

Answer 1:

#include<iostream.h>
#include<conio.h>

void foo(){
static int x=1;
cout<<x<<"\t"<<x+1<<endl;
x=x+2;
}

int main()
{
clrscr();

foo();
foo();
foo();
getch();
return 0;
}


Answer 2:

#include<stdio.h>
#include<conio.h>

void show_menu();
void add(int x, int y);
void sub(int x, int y);
void square(int x);
void power(int x,int y);
void factor_of(int x,int y);
void factor(int x);
int i;
// function definitions
void main(){
int s;

while(1){
show_menu();
scanf("%d", &s);
if (s==1){
   int x, y;
   printf("enter two numbers\n");
   scanf("%d %d", &x, &y);
   add(x, y);
}else if (s==2){
   int x, y;
   printf("enter two numbers\n");
   scanf("%d %d", &x, &y);
   sub(x, y);
}
else if(s==3){
   int x;
   printf("Enter number: ");
   scanf("%d",&x);
   square(x);

   }

   else if(s==4){
   int x, y;
   printf("enter two numbers\n");
   scanf("%d %d", &x, &y);
   factor_of(x, y);

   }

   else if(s==5){
   int x, y;
   printf("enter two numbers\n");
   scanf("%d %d", &x, &y);
   power(x, y);

   }

   else if(s==6){

   int x;
   printf("Enter number: ");
   scanf("%d",&x);
   factor(x);
   }

   else{
   break;
   }
}
}
void show_menu(){
printf("1. add 2. sub 3. square 4. factor_of 5. power 6. factor 7. quit\n");
printf("select operation\n");
}

void add(int x, int y){
// print x+y
int z;
z=x+y;
printf("the sum is %d\n", z);
}
void sub(int x, int y){
printf("the subtraction is %d\n",(x-y));
}
void square(int x){
printf("the square of %d is %d\n",x,(x*x));
}
void power(int x, int y){
int temp=x;
int i;
for(i=0;i<y;i++){
x=x*x;
}

printf("%d to power %d is :%d\n",temp,y,x);
}
void factor_of(int x, int y){
// if x is a factor of y, print “x is a factor of y”
// otherwise “x is not a factor of y”
if(y%x==0){
printf("%d is a factor of %d\n",x,y);
}
else{
printf("%d is not a factor of %d\n",x,y);
}
}

void factor(int x){
printf("all the factors of %d is: \n",x);

for(i=1;i<=x;i++){
if(x%i==0){
printf("%d\t",i);
}
}
}

output: