Lecture 7 Code Snippets

Slide 9

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
int main()
{
    int number = 0 , n;
    printf("Enter n: ");
    scanf("%d", &n);
    while(number <= n)
    {
        printf("%d\n", number);
        number++;
    }
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 10

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
int main()
{
    int negative=0, positive=0 , number;

    printf("Enter Zero to stop \n");

    scanf("%d", &number);
    if(number> 0)
            positive++;
        else if(number< 0)
            negative++;

    while(number != 0)
    {
        scanf("%d", &number);
        if(number> 0)
            positive++;
        else if(number< 0)
            negative++;
    }

    printf("The number of positive numbers = %d\n", positive);
    printf("The number of negative numbers = %d\n", negative);
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 13

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
int main()
{
    int n;
    scanf("%d",&n);

    double i = 1.0;
    double sum = 0;

    while(i <= n)
    {
        sum += i/ (i+1);
        i++;
    }

    printf("sum = %lf\n", sum);
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 14

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
int main()
{
    int negative=0, positive=0 , number;

    printf("Enter Zero to stop \n");

    do
    {
        scanf("%d", &number);
        if(number> 0)
                positive++;
            else if(number< 0)
                negative++;
    }while(number != 0);


    printf("The number of positive numbers = %d\n", positive);
    printf("The number of negative numbers = %d\n", negative);
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 17

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
int main()
{
    int grade , count, i=0;
    double sum = 0;

    scanf("%d", &count);

    while(i < count)
    {
        scanf("%d", &grade);
        sum += grade;
        i++;
    }

    printf("The average of your class is %0.3lf\n", sum/count);
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 18

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
int main()
{
    int number;
    scanf("%d", &number);

    for(int i = 0 ; i <= number ; i+=2)
        printf("%d\n", i);
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 19

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
int main()
{
    int number;
    scanf("%d", &number);

    for(int i = 0 ; i <= number ; i++)
        if(i % 2 == 0)
            printf("%d\n", i);
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 21

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
#include <math.h>
int main()
{
    int n;
    printf ("Enter a natural number:\n");
    scanf ("%d", &n);

    int flag = 1;

    if((n == 1) ||( (n != 2) && n % 2 == 0))
        flag = 0;

    for(int i = 3 ; i< sqrt(n) ; i+=2)
        if(n % i == 0)
            flag = 0;

    if(flag)
        printf ("%d is prime\n", n);
    else
        printf ("%d is not prime\n", n);
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 29

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
#include <math.h>
int main()
{
    int arr[20];
    double sum = 0;

    for(int i = 0 ; i < 20 ; i++)
    {
        scanf("%d", &arr[i]);
        sum += arr[i];
    }

    double avg = sum / 20;
    int lower = 0, higher = 0 ;
    for(int i = 0; i < 20 ; i++)
    {
        if(arr[i] >= sum)
            higher ++;
        else 
            lower ++;
    }

    printf("average = %lf\n", avg);
    printf("Small Size = %d, Large Size = %d\n", lower, higher);
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 30

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
#include <math.h>
int main()
{
    int n;
    scanf("%d", &n);
    int arr[n];
    double sum = 0;

    for(int i = 0 ; i < n ; i++)
    {
        scanf("%d", &arr[i]);
        sum += arr[i];
    }

    double avg = sum / n;
    int lower = 0, higher = 0 ;
    for(int i = 0; i < n ; i++)
    {
        if(arr[i] >= sum)
            higher ++;
        else 
            lower ++;
    }

    printf("average = %lf\n", avg);
    printf("Small Size = %d, Large Size = %d\n", lower, higher);
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 37

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
int main()
{
    int n, m;
    scanf("%d %d", &m , &n);

    for(int i = 1 ; i <= n ; i++)
    {
        for(int j = 1 ; j <= n ; j++)
            printf("*");

        if(i == n)
            break;
        printf("\n");
    }
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 39

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
int main()
{
    int n;
    scanf("%d", &n);

    for(int i = 1; i <= n ; i++)
    {
        for(int j = 1; j<=i ; j++)
            printf("*");

        if(i != n)
            printf("\n");
    }
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 41

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>
int main()
{
    int n; 
    scanf("%d", &n);

    for(int i = 1; i <= n ; i++)
    {
        for(int j = 1 ; j< i ; j++)
            printf(" ");
        for(int j = 1; j<= i ; j++)
            printf("*");

        printf("\n");
    }

    for(int i = n-1; i >= 1 ; i--)
    {
        for(int j = 1 ; j< i ; j++)
            printf(" ");
        for(int j = 1; j<= i ; j++)
            printf("*");

        printf("\n");
    }
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}

---

Slide 49

CC++

/** By: Negin Eini-pour **/
#include <stdio.h>

int main(void) {
    int row, col;
    do
    {
        scanf("%d %d", &row , & col);
    }while( row < 1 || col < 1 || row < col);

    row--;
    col--;
    if(col > row - col)
        col = row - col;

    long long res=1;
    for(int i = 1; i<= col ; i++)
        res *= (row - col + i) / i;

    printf("%lld", res);
}

#include <iostream>

int main() {
    // Your code here
    return 0;
}