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C Exercises: Convert a binary number into a decimal using math function

C For Loop: Exercise-46 with Solution

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

Pictorial Presentation:

Convert a binary number into a decimal using math function

Sample Solution:

C Code:

#include <stdio.h>
#include <math.h>
void main()
{       int n1, n;
	int dec=0,i=0,j,d;

     printf("\n\nConvert Binary to Decimal:\n ");
     printf("-------------------------\n");


	printf("Input  the binary number :");
	scanf("%d",&n);
	n1=n;
	while(n!=0)
	{  d = n % 10;
	   dec=dec+d*pow(2,i);
	   n=n/10;
	   i++;
	}
        printf("\nThe Binary Number : %d\nThe equivalent Decimal  Number is : %d\n\n",n1,dec);
}

Sample Output:

Convert Binary to Decimal:                                                                                    
 -------------------------                                                                                    
Input  the binary number :1010100                                                                             
                                                                                                              
The Binary Number : 1010100                                                                                   
The equivalent Decimal  Number is : 84 

Flowchart:

Flowchart : Convert a binary number into decimal using math function.

C Programming Code Editor:

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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