I have the following array below apart from it having more data and its all stored in a string array. how would I sort it so that It goes from highest to lowest.
col 0 col 1
example 0 90.87
example 1 100.87
example 2 873.88
example 9 88.98
to
example 2 873.88
example 1 100.87
example 0 90.87
example 9 88.98
???
I don't understand your question! Sorry, please explain further.
Strings in C are compared, using the include file string.h, and the strcmp() function. Here's how it works:
The value returned by strcmp() tells whether the strings are:
0: means they are equal
>0: means string1 is > than string2
<0: means string1 is < string2
int variable = strcmp(string1, string2);
or
if((strcmp(string1, string2)) > 0) {
//string1 was > string2 (see how the >'s match up)
}BTW, example 9 is going to be at the top of your list, if it's sorted in descending order.
Do you have some sorting code? If not, post up your code, and let's get you sorting. ;)
to make a char array
of 2 columns containing strings 49 characters long and
10 rows contaning strings also 49 characters long.
is this correct char ArrayName[10][50][2][50] ??
Do you know structures yet?
to make a char array
of 2 columns containing strings 49 characters long and
10 rows contaning strings also 49 characters long.is this correct char ArrayName[10][50][2][50] ??
what i get is you want a char array that have 10 rows and each row contains a 49 char string...
then it could be done by simply
char charname [10][50]
Never Mind I read the task wrong as I thought it all had to be in one array but I'm allowed as many as I need.
Cheers for the help though
It may not be the prettiest but I've done most of my task. All I need to do now is too display the cheapest item. How would I do this??
#include<stdio.h>
#include<stdlib.h>
#include<ctype.h>
#include<string.h>
void input();
void view();
char item[10][50]; // array of strings
float price[10]; // array of the prices
float total=0; // running total
int edit=0; // to see if data has been inputed
int main()
{
int menu=0;
system("cls");
printf("welcome to the main menu\n");
do
{
system("cls");
printf("please choose one of the following and type the number below and press enter:\n");
printf("1 - Input 10 list shopping list\n2 - View 10 list shopping list\n");
fflush(stdin);
scanf("%d",&menu);
switch(menu)
{
case 2:
if(edit==1)
{
view();
break;
}
else if(edit==0)
{
printf("You need to input data before you can view the list !!!\n");
sleep(3000);
break;
}
case 1:
input();
break;
}
}while(menu!=1 || 2);
}
void view()
{
int loop;
int menu;
system("cls");
for (loop=0;loop<10;loop++)
{
printf("%s, %0.2f\n",item[loop],price[loop]);
}
printf("all of these items cost %0.2f",total);
printf("\n\n");
do
{
printf("when your ready to go to the main menu\ntype 1 below and press enter\n");
scanf("%d",&menu);
}while(menu!=1);
}
void input()
{
float temp_price=0; // temp price input
int pnum=0; // product number
int correct; // is this correct
do
{
do
{
system("cls");
printf("Please enter the name of product %d of 10:\n",pnum+1);
fflush(stdin);
gets(item[pnum]);
printf("Please enter the price of product %d of 10:\n",pnum+1);
fflush(stdin);
scanf("%f",&temp_price);
printf("is the name of your product %s\n",item[pnum]);
printf("and does it cost %0.2f\n",temp_price);
printf("Please write '1' if correct and '0' if incorrect\n");
fflush(stdin);
scanf("%d",&correct);
edit=1;
}while (correct!=1);
total=total+temp_price;
price[pnum] = temp_price;
pnum++;
}while(pnum!=10);
system("cls");
}How would YOU find the lowest price item?
Perhaps, in a loop, you'd compare each item, and if it was the lowest priced item so far, set that value to be the lowPrice varible's value?
What about a linked list?
Well, two reasons:
1) he has an array, already, but no linked list. More efficient here, to just use what he has.
2) Does he know how to use a linked list? I don't know. My guess is no, he doesn't. If you don't know how to find the minimum value in an array, you probably don't know how to work with a linked list yet, either.
But it could be done with a linked list! ;)
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