I want to sort single string in alphabetical order what wrong in my code please help

Question

Statement:create a program such that it accepts a string S of N characters. S should only contains upper and lower-case characters.

Numbers and special case characters are not allowed in S.Now rearrange the string S in alphabetical order (a to z) .

In order to modify the string S consider the following rule.

Do not differentiate between lower-case and upper-case character of same alphabet and if both cases are available of same character preserve the order as of the

original string.

For example, if string S is “CxBdbazA” here alphabet “b” and “a” both present in upper case and lower case. but upper case “B” appears before lower case “b” and

lower-case “a” appears before upper-case “A” so in modified string alphabet orders will be “aABbCdxz”.

Input:first line contains string S of contains N characters without space.

Output: output contains the rearranged string S.

Constraints:5<=N<=25

take character array size as 25 to store string.

Example:

Hello

eHllo

https://code.sololearn.com/c5YsbHJ5JnDo/?r

Answer 1

your for 2nd for loop condition wasn't right and your upper function was a bit wrong i guess so i used an in built function and it works now here the code:

#include <stdio.h>
#include<string.h>
#include<ctype.h>
int main() {
char s[20];
char t;
int r,i,len;
scanf("%s",s);
len=strlen(s);
for(r=0;r<len-1;r++)
{
for(i=0;i<len-1-r;i++)
{
if(tolower(s[i])>tolower(s[i+1]))
{
t=s[i];
s[i]=s[i+1];
s[i+1]=t;
}
}
}
printf("%s",s);

return 0;
}
https://code.sololearn.com/cL4Q46IXfkRC/?ref=app

Answer 2

Thanks both of you 😊😊

Answer 3

You didn't change the value of b[].
As you are comparing with with b string,
if(b[r]>b[i])
you also have to change the value of it.I am not sure but it should work:
https://code.sololearn.com/cA20a18a22a9