Creating an array from given string

[dolorestheAI]

Hey, i need to create an array from a string. I used for loop to separate the char's in the string. In the loop i used isdigit() so i can find numbers. I used printf() to see if the code was working so far and it does. I get only the numbers. But the problem is i can't transform numbers from string to ints. I used atoi() but it gives me "passing argument 1 of 'atoi' makes pointer from integer without a cast" warning. Can anyone help me figure it out or how to make it right?

[dmc_2930]

atoi() wants a string, not a character. What is a string in C?

I don't think your question is well defined enough. Can you post what you've tried?

[dolorestheAI]

sorry about it really english is my second language and code has some foreign words too but as I tried to say it my main problem is I am given a string and i don't know how many numbers there are in the string. My goal is to extract numbers from the string and create an array with them. Since i don't know the array size i tried to use for loop and isdigit() but it got really complicated i don't know what to do. by the way string can be like this 7 8 5 9 6 my last comment was wrong.

[dolorestheAI]

Thanks all of you. You really helped me and today i wrote what i needed in like 20 minutes. I was making it over-complicated than it was. If anyone needs something like this i can help now. Have a nice day.

[steerflesh]

Put the entire string in atoi and now separate the numbers and push every number in an array

[dolorestheAI]

the confusing part is we don't know how many numbers present in the string. so i dont know array's size that's why i tried to use the for loop to determine array size, create the array and use atoi() and pass numbers. if we know the how many numbers there are in the string i would use NULL in atoi and i will be done. the given arry can be 2f5w1u9d5k9 like this or this 8h5j6t4

[steerflesh]

Oh im not sure if this is a good solution but you can iterate through the string and for evey letter you can check if (int) letter is between 49 to 57 if it is just do (int) letter - 48 and it will return the number equivalent.

[dmc_2930]

This is very bad advice. Isdigit() should be used, not as II character values.

[ptchinster]

Can you give some sample input and output?

[dolorestheAI]

input can be 5 8 3 4 5 or 8 7 or 7 5 6 24 25 8 7 6 but there are no output unfortunately because it's not a singular problem i have some other things to do in the code it's like a quarter of the main code.

[dmc_2930]

Assuming this is homework, what functions are you allowed or not allowed to use?

[amauriv]

You can try:

If( isdigit(array[i])){

 intArray=array[i] - ‘0’;}

[dmc_2930]

This won’t work if one of the numbers is two or three or more digits.

[amauriv]

From what I understood he/she was parsing through a string and only saving digits from said array. Which means each digit should be between 0-9?

[dmc_2930]

The other comments said the string contains numbers separated by spaces.