How do I sort the names in ascending order (from A – Z) using a one-dimensional array in C++

Question

1.00/5 (1 vote)

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This program will ask for the list of ten names then sort the names in ascending order (from A – Z).

My problem is that the program won't run because it has an error.

C#

#include<iostream.h>

main()
{
 char str[10];
 char g;

 for(int j=0; j<10; j++)
  {
     cin>>str[j];
    for(int i=0; i<10; i++)
     {
      if(str[i]>str[i+1])
        {
         g=str[i];
         str[i]=str[i+1];
         str[i+1]=g;
        }
     }
  }
 for(int y=0; y<10; y++)
  {
    cout<<str[y];
  }
 return 0;
}

Linker Warning: No module definition file specified: using defaults
So whats wrong with my program? I really don't understand the error.
Please help me revise my code so that it will run successfully.

Posted 3-Jul-14 13:01pm

GwapoKho

Updated 3-Jul-14 13:16pm

v2

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Comments

Mohibur Rashid 3-Jul-14 20:17pm

Did you write the code?

[no name] 3-Jul-14 21:33pm

If whatever compiler you are using is more than 5 years old, upgrade to a modern compiler.

Member 10011989 4-Jul-14 13:16pm

yes agree with wes ..
plz use latest compiler

3 solutions

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Yang Kok Wah · Answer 1 · 2014-07-03T15:41:00

C++

#include<iostream.h>

int main(int argc, char* argv[])
{

 char *str[10];
 char *g;
 
 for(int j=0; j<10; j++)
  {
	 str[j]= new char[255];
     cin>>str[j];
 }

 for(int k=9;k>=0;k--)
    for(int i=0; i<k; i++)
     {
      if(*str[i]>*str[i+1])
        {
         g=str[i];
         str[i]=str[i+1];
         str[i+1]=g;
        }
     }
	cout << "----" <<endl;
  
 for(int y=0; y<10; y++)
  {

    cout<<str[y]<< endl;
	delete[] str[y];
  }

 return 0;
}

Note:
1. char *str[10] is an array of 10 char pointers
2. so you need to allocate memory for these pointer thus
str[j]= new char[255];
3. for g to refer to str[i], g must also be a pointer
char *g
4. we need clean up memory before exit thus
delete[] str[y]

Andreas Gieriet · Answer 2 · 2014-07-04T10:06:00

Solution 4

Hey, this is C++! Why don't you use std::string, std::vector, and std::qsort?
Your coding is plain old C.
Cheers
Andi

Posted 4-Jul-14 10:06am

Andreas Gieriet

ETTOURI · Answer 3 · 2014-07-03T13:14:00

Solution 2

hello
if you looking up again your program you see that the str array isn't a string array but just character array may be this is the problem
you sould be use the declaration bellow:

C++

char *str[10];

After you can use one of sorting algorithms (e.g sort by selection)

Posted 3-Jul-14 13:14pm

ETTOURI

Comments

GwapoKho 3-Jul-14 19:17pm

It appears to be like this
Compiling NONAME00.CPP:
Error NONAME00.CPP 15: Cannot convert 'char *' to 'char' in function main()
Error NONAME00.CPP 17: Cannot convert 'char' to 'char *' in function main()
Warning NONAME00.CPP 26: 'g' is assigned a value that is never used in function main()