### Program 322:Binary to Hexadecimal Conversion in C

Program 322:Binary to Hexadecimal Conversion in C
Method I:
```#include<stdio.h>
#include<string.h>
main()
{
int binaryNum[]={0,1,10,11,100,101,110,111,1000,1001,1010,1011,1100,1101,1110,1111},j=0,i;
char hexa[20]="";
unsigned long long int binary,number,temp;
printf("Enter Binary number\n");
scanf("%llu",&binary);
temp=binary;
while(temp!=0)
{
number=temp%10000;
for(i=0;i<=15;i++)
{
if(binaryNum[i]==number)
{
if(i<=9)
hexa[j]=(i+'0'); //i+'0' to convert integer to string
else
hexa[j]=(i+55);

j++;
}
}
temp/=10000;
}
hexa[j]='\0';
strrev(hexa);
printf("Octal number for given Binary number %llu is %s\n",binary,hexa);
}```

Method II:
```#include<stdio.h>
#include<string.h>
#include<math.h>
#include<ctype.h>
int ConvertFromBinarytoOther(unsigned long long int,int);
char *ConvertFromDecimalToHexa(int,int);
int main()
{
char final[20];
unsigned long long int binary,decimal;
printf("Enter Binary Number\n");
scanf("%llu",&binary);
decimal=ConvertFromBinarytoOther(binary,2);//Converting binary to decimal
strcpy(final,ConvertFromDecimalToHexa(decimal,16));//Converting Decimal to Hexa
printf("HexaDecimal for given Binary %llu is %s\n",binary,final);

return(0);
}

char *ConvertFromDecimalToHexa(int decimal,int num)
{
int temp,i,k=0;
char final[20];
temp=decimal;
while(temp!=0)
{
i=temp%num;
if(i>9)
{
final[k]=i+55;
k++;
}
else{
final[k]=(i+'0');//To convert from integer to character add (number+'0')
k++;
}
temp=temp/num;
}
final[k]='\0';
return(strrev(final));
}

int ConvertFromBinarytoOther(unsigned long long int binary,int num)
{
int i,inc=0,final=0;
unsigned long long int temp;
temp=binary;
while(temp!=0)
{
i=temp%10;
final=final+(i*pow(num,inc));
temp=temp/10;
inc++;
}
return(final);

}
```
Explanation:

//Coming Soon...

Output:
 Method 1

 Method 2