CODEWITHSUNDEEP
c
habib rajabi
habib rajabi

Reputation: 1

issue with a program in c to check a num whether is equally divisible by 2 through 9

I am a beginner in c programming and I tried to write a program that asks for a number from 1 to 100 and tells then which numbers are equally divisible by 2 through 9. the point is I intended to show the result by 1 printf() and I wrote 8 %f and variable but some numbers have just 1 or 2 divisible not 8 !!! 

int num;
float a2,a3,a4,a5,a6,a7,a8,a9,n2,n3,n4,n5,n6,n7,n8,n9;
float b2,b3,b4,b5,b6,b7,b8,b9;
printf("please enter an int number between 1 to 100 \n");
scanf(" %d", &num);
a2=( num % 2 == 0)?(b2=2):(n2);
a3=( num % 3 == 0)?(b3=3):(n3);
a4=( num % 4 == 0)?(b4=4):(n4);
a5=( num % 5 == 0)?(b5=5):(n5);
a6=( num % 6 == 0)?(b6=6):(n6);
a7=( num % 7 == 0)?(b7=7):(n7);
a8=( num % 8 == 0)?(b8=8):(n8);
a9=( num % 9 == 0)?(b9=9):(n9);
printf("your chosen number is divisible by %.0f %.0f %.0f %.0f  %.0f  %.0f %.0f  %.0f ",b2,b3,b4,b5,b6,b7,b8,b9);

Upvotes: -1

Views: 72

Answers (1)

Ardent Coder
Ardent Coder

Reputation: 3995

There are too many problems in your code:

  1. You print the values of all b even if the given number is not divisible by one of [2, 9]

  2. What is the purpose of a and n?

  3. You have not initialized b. It can carry garbage values because of those conditions.

  4. Why do you use floating point variables? Divisibility tests are for integers only.

Solution:

Instead of hardcoding a pattern, simply run a loop, and check and display the result simultaneously.

printf("%d is divisible by:", num);
for (int i = 2; i <= 9; ++i)
{
 if (num % i == 0)
 {
  printf(" %d", i);
 }
}

By the way, your code does not check if the given number is in your desired range as well.

Upvotes: 1

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