Program:
#include<stdio.h>
#include<string.h>
void baseconversion(char s[20],int,int);
main()
{
char s[20];
int base1,base2;
printf("Enter the number and base:");
scanf("%s%d",s,&base1);
printf("Enter the base to be converted:");
scanf("%d",&base2);
baseconversion(s,base1,base2);
}
void baseconversion(char s[20],int b1,int b2)
{
int count=0,r,digit,i,n=0,b=1;
for(i=strlen(s)-1;i>=0;i--)
{
if(s[i]>='A'&&s[i]<='Z')
{
digit=s[i]-'0'-7;
}
else
{
digit=s[i]-'0';
}
n=digit*b+n;
b=b*b1;
}
while(n!=0)
{
r=n%b2;
digit='0'+r;
if(digit>'9')
{
digit+=7;
}
s[count]=digit;
count++;
n=n/b2;
}
for(i=count-1;i>=0;i--)
{
printf("%c",s[i]);
}
printf("\n");
}
Output:
nn@linuxmint ~ $ gcc anybse.c
nn@linuxmint ~ $ ./a.out
Enter the number and base:10
10
Enter the base to be converted:2
1010
nn@linuxmint ~ $ ./a.out
Enter the number and base:1010
2
Enter the base to be converted:10
10
nn@linuxmint ~ $
#include<stdio.h>
#include<string.h>
void baseconversion(char s[20],int,int);
main()
{
char s[20];
int base1,base2;
printf("Enter the number and base:");
scanf("%s%d",s,&base1);
printf("Enter the base to be converted:");
scanf("%d",&base2);
baseconversion(s,base1,base2);
}
void baseconversion(char s[20],int b1,int b2)
{
int count=0,r,digit,i,n=0,b=1;
for(i=strlen(s)-1;i>=0;i--)
{
if(s[i]>='A'&&s[i]<='Z')
{
digit=s[i]-'0'-7;
}
else
{
digit=s[i]-'0';
}
n=digit*b+n;
b=b*b1;
}
while(n!=0)
{
r=n%b2;
digit='0'+r;
if(digit>'9')
{
digit+=7;
}
s[count]=digit;
count++;
n=n/b2;
}
for(i=count-1;i>=0;i--)
{
printf("%c",s[i]);
}
printf("\n");
}
Output:
nn@linuxmint ~ $ gcc anybse.c
nn@linuxmint ~ $ ./a.out
Enter the number and base:10
10
Enter the base to be converted:2
1010
nn@linuxmint ~ $ ./a.out
Enter the number and base:1010
2
Enter the base to be converted:10
10
nn@linuxmint ~ $
Please provide the explanation.
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