How to seperate characters from a string?

[RAMBO29]

Hi I am a bit new to this field and came across a small problem.I tried to find the solution for almost 2 days and havent been able to.I hope some one there can help.I am sure its a small things but just cant get it right.

Well I have some things like

s=12,56,3,4 \\s is a string

I have to take out the values i.e 12,56,3 and 4 and convert to integer values.The limit is the comma.I tried to use something to find how many numbers are before the comma and extract it.but is didnt work as it started from the begining always.The number is always integer and there is no double or any other type.

So simply how to get the values from a string to an integer where it is seperated by a comma?
Thanks

[Ganon11]

Are these values held in a string (i.e. std::string) or are they in a character array (i.e. char string[])?

[kishoren]

Hi I am a bit new to this field and came across a small problem.I tried to find the solution for almost 2 days and havent been able to.I hope some one there can help.I am sure its a small things but just cant get it right.

Well I have some things like

s=12,56,3,4 \\s is a string

I have to take out the values i.e 12,56,3 and 4 and convert to integer values.The limit is the comma.I tried to use something to find how many numbers are before the comma and extract it.but is didnt work as it started from the begining always.The number is always integer and there is no double or any other type.

So simply how to get the values from a string to an integer where it is seperated by a comma?
Thanks

use strtok() function, and , as a delim and after use atoi function.

[RRick]

If your delimiter is a space (' '), then you can use the C++ streams (fstream and stringstring) to parse the data directly into your variables. What do you prefer?

[RAMBO29]

Hi
thanks for the info above.Well to make the story clear I am working on a software to connect a SMU(a machine to measure the properties of a sub micron chip) to its software.I have the idea for the software but just cant get it translated.

Well we enter the number of pins to connect to each wafer like 3,12,7,19 etc.And so i just have to change it to an integer so as to transfer it to a different machine trough GPIB.I have finished that part.So all that remains is to convert this string with integer values to an integer
string initial;
int chan11,chan12,chan13,chan14;
initial=23,12,7,8;
chan11=23;
chan12=12;
chan13=7;
chan14=8;

I tried to use itol in a loop but didt work it gave some rubbish values.I know for integer we can use something like;
int j=11;
for(i=0;i<10;i++)
{
if(string[i]!=',';//if is a ,
chan[j]=chan[j]*10+string[i];//eg:chan 11=2*10+3=23
}

else
{
j++; //chan 11 is now chan 12
}

Something like this.Thanks for the time again:-)

[RAMBO29]

Hi all;
Thanks for all those who helped.I managed to finish it with strtok() function to convert to character and then to integer with itoa() function with information from various threads in this website.

Thanks a lot