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Join Date: Nov 2007
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Junior Poster in Training
So I've got "m_starts" as a pointer to an int (int * m_starts
.
And a const char * of "m_str".
m_str = "bad,cold,new".
How can I allocate "m_starts" to store the starting index of each word in m_str???
For loop?
.And a const char * of "m_str".
m_str = "bad,cold,new".
How can I allocate "m_starts" to store the starting index of each word in m_str???
For loop?
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Join Date: Aug 2005
Location: near St Louis, Missouri, USA
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First you have to find out how many comma-separated words are in the string. Iterate through the string and count the commans. Then allocate the int array large enough to hold that many integers. After that, go through the string agsin, this time when you find a comma set one of the integers to be the numeric value of where the comma was found.
For example in the string you posted you will need three integers because the string contains three comma-separated words. The first integer will be 0, the second integer 4 and the 3d integer is 9.
For example in the string you posted you will need three integers because the string contains three comma-separated words. The first integer will be 0, the second integer 4 and the 3d integer is 9.
I think it's about time we voted for senators with breasts. After all, we've been voting for boobs long enough. ~Clarie Sargent, Arizona senatorial candidate
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
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Understood, but what I'm asking is how do i allocate it to the size i want (in this case 3)??
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I mean I can set "m_starts[3];" or even run through a for loop so i leave it open to any number of sizes, but what I DON'T understand is how to then use it to store the starting index of each word in m_str. How do i go about that process??
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Join Date: Aug 2005
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>>how do i allocate it to the size i want
This is c++ so use the new operator to allocate the array
This is c++ so use the new operator to allocate the array
m_starts = new int[NumberOfIntegers]; I think it's about time we voted for senators with breasts. After all, we've been voting for boobs long enough. ~Clarie Sargent, Arizona senatorial candidate
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
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Practically a Master Poster
dont forget to use delete to deallocate the memory. 
Last edited by jaepi : Dec 18th, 2007 at 12:52 am.
Retreat!!!
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Light Poster
But I though DMA is for integers contain in an array only? Characters won't work for DMA....I've tried it before
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Originally Posted by neosomosis 
But I though DMA is for integers contain in an array only? Characters won't work for DMA....I've tried it before
Huh? I assume DMA means Direct Memory Address. How does that relate to the discussion of this thread ? BTW DMA is not possible with any 32-bit compiler unless writing a kernel-mode device driver.
Last edited by Ancient Dragon : Dec 18th, 2007 at 9:09 am.
I think it's about time we voted for senators with breasts. After all, we've been voting for boobs long enough. ~Clarie Sargent, Arizona senatorial candidate
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
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Posting Pro in Training
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Originally Posted by Ancient Dragon
Huh? I assume DMA means Direct Memory Address. How does that relate to the discussion of this thread ? BTW DMA is not possible with any 32-bit compiler unless writing a kernel-mode device driver.
I think he means 'Dynamic Memory Allocation' - I could be wrong though. Either way, it works fine with both char and int
Last edited by Bench : Dec 18th, 2007 at 10:20 am.
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