Write a C Program to convert a binary or octal number to a decimal number
#include<stdio.h>
func(int n,int base);
int main(void)
{
int num, base, result;
char choice;
printf("Enter 'b' for binary or 'o' for octal : ");
scanf("%c",&choice);
printf("Enter a number : ");
scanf("%d",&num);
base=(choice=='b')? 2 : 8;
result=func(num,base);
printf("Decimal number is %d\n",result);
return 0;
}
func(int n,int base)
{
int rem,d,j=1,dec=0;
while(n>0)
{
rem=n%10;
d=rem*j;
dec+=d;
j*=base;
n/=10;
}
return dec;
}
Output
Enter 'b' for binary or 'o' for octal : b
Enter a number : 101010
Decimal number is 42
Enter 'b' for binary or 'o' for octal : o
Enter a number : 7145
Decimal number is 3685
