ERC First Semester C Programming LAB SHEET NO.5 [To be familiar with LOOPS]

Question

1. WAP to read 10 numbers from user and find their sum and average.
2. WAP to display the multiplication table of integer given by the user.
3. WAP to input two integer values from the user and print the even number between the range of integers. Also count the even number and display the count as well [Hint: if user enters 10 and 100. The program should print and count even numbers between 10 and 100].
4. WAP to display sum of series: 1 + 1/2 + 1/3 + 1/4 + 1/5 ... 1/n
5. WAP to display sum of series: 1 + 1/2! + 1/3! + 1/4! + 1/5! ... 1/n!
6. WAP to display sum of series: x + x²/2! + x³/3! + x⁴/4! + x⁵/5! ... xⁿ/n!
7. WAP to find the value cos(x) without using cos(x) library function.
8. WAP to display weather a number is Armstrong or not.
9. WAP to display the first n terms of Fibonacci series.
10. WAP to display the number in reverse order.
11. WAP to check whether a number is a palindrome or not.
12. WAP to find HCF and LCM of two numbers.
13. WAP to print the following patterns:

    •       1
            12
            123
            1234
            12345
            

    •     12345
          1234
          123
          12
          1
          

    •           * 	
               ***
              *****
             *******
            *********
            

    •     1
          2 3
          4 5 6
          7 8 9 10
          11 12 13 14 15
          

    • 1 2 3 4 5 4 3 2 1
        1 2 3 4 3 2 1
          1 2 3 2 1
            1 2 1
              1	
              

    • 5 4 3 2 1
      5 4 3 2
      5 4 3
      5 4
      5

Solution:

Lab Sheet 5: To be familiar with LOOPS

1. WAP to read 10 numbers from the user and find their sum and average.

C Program: Code

#include <stdio.h>
int main()
{
int a,b=0,i;
printf("Enter 10 Number:\n");
for (i=1;i<=10;i++)
{
scanf("%d",&a);
b=b+a;
}
printf("Sum of 10 number given by user is %d.",b);
return 0;
}

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

2. WAP to display the multiplication table of integers given by the user.

C Program: Code

#include<stdio.h>
int main()
{
int a,i,b;
printf("Enter any Number:\n");
scanf("%d",&a);
for (i=1;i<=10;i++)
{
b=a*i;
printf("%d * %d = %d\n",a,i,b);
}
return 0;
}

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

3. WAP to input two integer values from the user and print the even number between the range of integers. Also, count the even number and display the count as well [Hint: if the user enters 10 and 100. The program should print and count even numbers between 10 and 100].

C Program: Code

#include<stdio.h>
int main()
{
int a,b,i,c=0,d=0;
printf("Enter the starting Number:\n");
scanf("%d",&a);
printf("Enter the ending number:\n");
scanf("%d",&b);
for (i=a;i<=b;i++)
{
c=i%2;
if(c==0)
{
printf("%d\t",i);
d=d+1;
}
}
printf("\n There are total %d even numbers.",d);
return 0;
}

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

4. WAP to display sum of series: 1 + 1/2 + 1/3 + 1/4 + 1/5 ... 1/n

C Program: Code

#include <stdio.h>
int main()
{
int i, n;
float sum = 0;
printf("Enter the value of n: \n");
scanf("%d", &n);
for (i = 1; i <= n; i++)
{
sum = sum + 1.0 / i;
}
printf("The sum of the above series up to %d th term is %f", n, sum);
return 0;
}

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

5. WAP to display sum of series: 1 + 1/2! + 1/3! + 1/4! + 1/5! ... 1/n!

C Program: Code

  Code
  

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

6. WAP to display sum of series: x + x² /2! + x³ /3! + x⁴ /4! + x⁵ /5! ... x n /n!

C Program: Code

  Code
  

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

7. WAP to find the value cos(x) without using cos(x) library function.

C Program: Code

  Code
  

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

8. WAP to display weather a number is Armstrong or not.

C Program: Code

  Code
  

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

9. WAP to display the first n terms of Fibonacci series.

C Program: Code

  Code
  

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

10. WAP to display the number in reverse order.

C Program: Code

  Code
  

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

11. WAP to check whether a number is a palindrome or not.

C Program: Code

  Code
  

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

12. WAP to find HCF and LCM of two numbers.

C Program: Code

  Code
  

Output:

Discussion and Conclusion:

Discussion:

Conclusion:

13. WAP to print the following patterns:

•       1
        12
        123
        1234
        12345
        

•     12345
      1234
      123
      12
      1
      

•           * 	
           ***
          *****
         *******
        *********
        

•     1
      2 3
      4 5 6
      7 8 9 10
      11 12 13 14 15
      

• 1 2 3 4 5 4 3 2 1
    1 2 3 4 3 2 1
      1 2 3 2 1
        1 2 1
          1	
          

• 5 4 3 2 1
  5 4 3 2
  5 4 3
  5 4
  5

C Program: Code

  Code
  

Output:

Discussion and Conclusion:

Discussion:

Conclusion: