Thread: Alphabetizing Names

I'm being asked to do things I haven't done in 2 years, so naturally, I'm rusty. Basically I need to alphabetize 5 names, Susan, Ralph, Marie, Bob, and George. What I want to do is store is name in a string, and compare the first letter in each name, and then print them in that order. This is what I have so far:

Code:

 
#include <stdio.h>

int main (void)
{
char name1[15];
char name2[15];
char name3[15];
char name4[15];
char name5[15];
printf("Enter name 1");
scanf("&#37;14s",name1);
printf("Enter name 2");
scanf("%14s",name2);
printf("Enter name 3");
scanf("%14s",name3);
printf("Enter name 4");
scanf("%14s",name4);
printf("Enter name 5");
scanf("%14s",name5);
return 0;
}

So I know how to store the info, I just have no Idea how to sort it. I'm not asking for anyone to do the rest for me, just need a little help on the method.

You should look up strcmp.

Ok, I redid it

Code:

#include <stdio.h>
void sort(char *array[], int size);

int main()
{
int i;
int asize=5;
char *names[5]={"Susan","Ralph","Marie","Bob","George"};

sort(names,asize);

for(i=0;i<5;i++)
{
printf("%s\n", *(names +i));
}
return 0;
}
        
         
                
                
void sort(char *array[], int size)
{
int final;
int j;
int k;
for(j=0;j<size-1;j++)
{
        for(k=0;k<size-1-j;k++)
        {
                final= strcpm(array[k],array[k+1]);
                if (final>0)
                        swap(array[k],array[k+1]);
        }
}
}

the error i get is

main.o(.text+0xe1): In function `sort':
: undefined reference to `strcpm'
main.o(.text+0x11d): In function `sort':
: undefined reference to `swap'
collect2: ld returned 1 exit status



is there some kind of header file i need to use strcmp and swap?

#include <string.h>

Learn to spell strcmp, that sort of thing matters
The compiler wont make an educated guess

Write yourself a swap function

Originally Posted by citizen

#include <string.h>

Learn to spell strcmp, that sort of thing matters
The compiler wont make an educated guess

Write yourself a swap function

how would I do that?

nvm, i just figured it out and it works. It was warning me about not casting however...can any specify on what exactly this means.

Code:

include <stdio.h>
#include <string.h>
void sort(char *array[], int size);

int main()
{
int i;
int asize=5;
char *names[5]={"Susan","Ralph","Marie","Bob","George"};

sort(names,asize);

for(i=0;i<5;i++)
{
printf("%s\n", *(names +i));
}
return 0;
}

void sort(char *array[], int size)
{
int final;
int j;
int k;
int temp;
for(j=0;j<size-1;j++)
{
        for(k=0;k<size-1-j;k++)
        {
                final= strcmp(array[k],array[k+1]);
                if (final>0)
                        {
                                temp= array[k];
                                array[k]=array[k+1];
                                array[k+1]=temp;
                        }
        }
}
}

Thanks for the help all

That's a decent try, but temp should be a pointer to a string, since that's what it will be holding onto.