if a five digit number is input through the keyboard write a program to calculate the sum of its digits.(Hints:Use the modulus operator %)

if a five digit number is input through the keyboard write a program to calculate the sum of its digits.(Hints:Use the modulus operator %)

 #include<stdio.h>

int main()

{  

int number ,sum=0,i,n, count=0,num;

printf(" Enter the number :");

scanf("%d", &number);

  num=number;

while=(num!=0)

{

num/=10;

count+=1;

}

for(i=0;i<count;i++) //i=0 to i=count-1(length(number))

{

n=number%10;

number=number/10;

sum=sum+n;

}

printf("sum=%d",sum);

return 0;

}

OUTPUT--   Enter the number:54678

                        sum=30

OUTPUT--

 

another important program- -

1. paper of size A0 has dimensions 1189 mmx 841 mm .Each subsequent size A(n) is defined as A(n-1) cut in half parallel to its shorter sides .Thus paper of size A1 would have dimensions 841 mm X 594 mm .Write a program to calculate the print paper sizes A0,A1,A2,.........A8.

https://allcodescience.blogspot.com/2021/12/paper-of-size-a0-has-dimensions-1189.html

 2...If lengths of three sides of a tringle are input through the keyboard write a program to find the area of triangle. 

3.... the length and breadth of a rectangle and radius of a circle are input through the keyboard. write a program to calculate the area and perimeter of the rectangle, and the area and circumference of the circle 

4,,, if the marks obtain by a student in five different subjects are input through the keyboard write a program to find out the aggregate marks and percentage marks obtained by the student. assume that the maximum marks that can be obtained by a student in each subject is 100.