Urlify | solution of cracking the coding interview

  Problem:- 

  Write a method to replaces all the spaces in a string with '%20' . You may assume that string have sufficient spaces at the end to hold the additional characters .

Code:-

#include <stdio.h>

#include<string.h>

int main()

{

char s[100],s2[100];

printf("Enter a string\n");

scanf("%[^\n]",s);

int k=0;

int l=strlen(s);

l--;

while(s[l]==' ')

l--;

for(int i=0;i<=l;i++)

{

if(s[i]==' ')

{

s2[k]='%';

s2[++k]='2';

s2[++k]='0';

}

else

{

s2[k]=s[i];

}

k++;

}

s2[k]='\0';

strcpy(s,s2);

printf("%s ",s);

return 0;

}

Output:-

Enter a string

Mr john Smith

Mr%20john%20Smith

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