Arrays in C++ - Overclock.net

Mikey122687 · 10-18-09

So i'm learning array single dimensional and i have this problem to do but i don't know how to start it.

PHP Code:


			
Write a function that counts the occurrence of each letter in the string using the following header:

void count (const char s[], int counts [], int size)

where size is the seize of the counts array. In this case, it is 26. Letters are not case-sensitive. A and a are counted as a.

Write a test program that reads a string, invokes the count function, and displays the no-zero counts.

Example

Enter a string: Welcome to New York!
c: 1 times
e: 3 times
k: 1 times
l: 1 times
m: 1 times
n: 1 times
o: 3 times
r: 1 times
t: 1 times
w: 2 times
y: 1 times

B-80 · 10-18-09

Quote:

Originally Posted by Mikey122687

So i'm learning array single dimensional and i have this problem to do but i don't know how to start it.

PHP Code:


			
Write a function that counts the occurrence of each letter in the string using the following header:

void count (const char s[], int counts [], int size)

where size is the seize of the counts array. In this case, it is 26. Letters are not case-sensitive. A and a are counted as a.

Write a test program that reads a string, invokes the count function, and displays the no-zero counts.

Example

Enter a string: Welcome to New York!
c: 1 times
e: 3 times
k: 1 times
l: 1 times
m: 1 times
n: 1 times
o: 3 times
r: 1 times
t: 1 times
w: 2 times
y: 1 times

string input;

int counts[26];
const char s[] = {'A','B',ect......};

cin >> input;

int size = input.size();
for(int count = 0; count<input.size(); count++){

for(int i = 0; i<26; i++)
{
if(input.substr(count, 1).toUpperCase() == s[i]){
counts[i]++;
i=26;
}
}
}
for(int l = 0; l<26; l++)
{
cout<<s[l]<<": "<<counts[l]<<" times"<<endl;
}

Mikey122687 · 10-18-09

Hmm, thanks for posting but i can't use the input.substr i haven't learn it yet or is that written a different way?

B-80 · 10-18-09

what string methods do you know?

charAt() is another you can use.

Mikey122687 · 10-18-09

The regular one lol. The most basic basic string. I mean i can use C-string, but thats about it.

B-80 · 10-19-09

Quote:

Originally Posted by Mikey122687

The regular one lol. The most basic basic string. I mean i can use C-string, but thats about it.

yeah, cstring is what i am using too. but cstring has built in methods like size(), substr(), charAt().

Mikey122687 · 4 Weeks Ago

I still need help on this if anyone could help me

B-80 · 4 Weeks Ago

Quote:

Originally Posted by Mikey122687

I still need help on this if anyone could help me

dude I gave you an answer. you can use substr or charat, trust me. They are built into the cstring class. It is part of cstring. IDK how much you know about programming. Why don't you ask your teacher what method she wants you to use?

Also a "thanks for your help" would be nice here and there. instead of just completely disregarding what is most likely the answer to your problem.

Mikey122687 · 4 Weeks Ago

Quote:

Originally Posted by Mikey122687

Hmm, thanks for posting but i can't use the input.substr i haven't learn it yet or is that written a different way?

Quote:

Originally Posted by B-80

dude I gave you an answer. you can use substr or charat, trust me. They are built into the cstring class. It is part of cstring. IDK how much you know about programming. Why don't you ask your teacher what method she wants you to use?

Also a "thanks for your help" would be nice here and there. instead of just completely disregarding what is most likely the answer to your problem.

K first off, i did say thanks.

Second, i'm very new to this so telling me stuff like substr, charat, is like speaking Korean to me. I clearly don't know what it mean.

And how would i put it so it would run?

I did

PHP Code:


			
#include <iostream>
#include <cmath>

using namespace std;

int main()

and then put ur code in and it won't run

PHP Code:


			
#include <iostream>
#include <ctime>
#include <cmath>

using namespace std;

int main ()

{
    

string input;

int counts[26];
const char s[] = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};

cin >> input;

int size = input.size();
for(int count = 0; count<input.size(); count++){

for(int i = 0; i<26; i++)
{
if(input.substr(count, 1).toUpperCase() == s[i]){
counts[i]++;
i=26;
}
}
}
for(int l = 0; l<26; l++)
{
cout<<s[l]<<": "<<counts[l]<<" times"<<endl;




return 0;
}

Mikey122687 · 4 Weeks Ago

what im confused is this

PHP Code:


			
if(input.substr(count, 1).toUpperCase() == s[i])

You see how it says ".toUpperCase()" I dont know what the (.) means. I have no clue what it stands for or what it does.

I can't ask for help because my professor isn't teaching us anything. All he ever say is "read the book" and the whole class is simply learning on our own. I have to pretty much learn C++ by myself. Whenever i ask him for help, he told me to go read the book. And i did, but it doesn't mean i get all the materials.

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Arrays in C++

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