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C Exercises: Convert decimal to binary

C Function : Exercise-6 with Solution

Write a program in C to convert decimal number to binary number using the function.

Pictorial Presentation:

C Exercises: Convert decimal to binary

Sample Solution:

C Code:

#include<stdio.h>

long toBin(int);

int main()
{
    long bno;
    int dno;
	printf("\n\n Function : convert decimal to binary :\n");
	printf("-------------------------------------------\n");    
    printf(" Input any decimal number : ");
    scanf("%d",&dno);
    bno = toBin(dno);
    printf("\n The Binary value is : %ld\n\n",bno);

    return 0;
}
long toBin(int dno)
{
    long bno=0,remainder,f=1;
    while(dno != 0)
    {
         remainder = dno % 2;
         bno = bno + remainder * f;
         f = f * 10;
         dno = dno / 2;
    }
    return bno;
}

Sample Output:

 Function : convert decimal to binary :
-------------------------------------------
 Input any decimal number : 65

 The Binary value is : 1000001

Flowchart:

Flowchart: Convert decimal to binary

C Programming Code Editor:

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Next: Write a program in C to check whether a number is a prime number or not using the function.

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C Programming: Tips of the Day

Static variable inside of a function in C

The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().

The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.

The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().

Ref : https://bit.ly/3fOq7XP