Introduction to programming in C Week 3

Course Name: Introduction to programming in C

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These are Introduction to programming in C Assignment 3 Answers

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Question 1

Complete the function int find_factorial(int k) to find the factorial of the positive number k.
The factorial of a positive integer k, denoted by k!, is the product of all positive integers less than or equal to k.
k!=k×(k−1)×⋯×1.
Input
The first line of input is a positive integer N.
The next line contains N positive integers ki for i=1 to N.
Output
For each ki given as input, print factorial of ki.

Code:-

#include <stdio.h>

int find_factorial(int k){
  int i,f = 1;
  for(i=1;i<=k;i++)
    f*=i;
  return f;
}

int main(){
    int n,k;
    scanf("%d",&n);

    for(int i=0;i<n;i++){
        scanf("%d",&k);
        printf("%d ", find_factorial(k));
    }

    return 0;
}

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These are Introduction to programming in C Assignment 3 Answers

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Question 2

Write a C function to find the kth occurrence of an odd integer in a sequence of non-negative integers, and then call your function from main.
Your function should be according to the following declaration:
int find_odd(int k);

Input
——–
You are given the input in two lines:
The first line contains a positive integer k.
In the second line, you will be given a sequence of numbers terminated with a -1.
You have to find the kth occurrence of an odd integer in the sequence.
Note:  The -1 is not part of the sequence.

Output
———-
If there are k odd numbers in the sequence, then output the kth occurrence of an odd number in the sequence, if present. If there are less than k odd numbers in the sequence, output -1.
Sample Input
——————
2
1 4 3 6 5 2 3 4 1 -1
Sample Output
——————–
3

Code:-

#include <stdio.h>
int find_odd(int k){
  int x0=1,cnt=0;
  while(x0!=-1)
    {
      scanf("%d",&x0);
      if(x0%2)
         ++cnt;
      if(cnt==k)
      {
        return x0;
        break;
      }
    }
  return -1;
}
int main(){
    int k;
    scanf("%d",&k);
    printf("%d",find_odd(k));
    return 0;
}

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These are Introduction to programming in C Assignment 3 Answers

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Question 3

The two moving average is the sequence of averages of the last 2 entries.
For the first number, no average is output.
For example, if the sequence of numbers is a1,a2,a3,a4,a5
The 2-moving average is (a1+a2)/2,(a2+a3)/2,(a3+a4)/2,(a4+a5)/2.

Code:-

#include <stdio.h>
int main()
{
int x0,x1;
    scanf("%d",&x0);
    while(1)
    {
        scanf("%d",&x1);
        if(x1==-1)
          break;
        printf("%.1f ",((x0+x1)/2.0));

        x0=x1;
    }
  return 0;
}

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These are Introduction to programming in C Assignment 3 Answers

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These are Introduction to programming in C Assignment 3 Answers

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