help scanning data

This is a discussion on help scanning data within the C Programming forums, part of the General Programming Boards category; I need to ask the user to input data and they want it all on one line like this: Enter ...

  1. #1
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    help scanning data

    I need to ask the user to input data and they want it all on one line like this:

    Enter data: 1 2 3 4 5 (user can put more than 5 numbers if they wish)

    I have to put this data into an array and I don't know how. I figure I'm going to have to make a file and put it into there and then read it from the file.

    So my question: How can I get this data into a file?

  2. #2
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    Quote Originally Posted by Matt33
    I need to ask the user to input data and they want it all on one line like this:

    Enter data: 1 2 3 4 5 (user can put more than 5 numbers if they wish)

    I have to put this data into an array and I don't know how. ?
    something like this ? ...
    Code:
    #define MAXLINESIZE 128
    #define MAXNUMSPERLINE 20
    
    int nums[MAXNUMSPERLINE] = {0};
    char linebuff[MAXLINESIZE];
    
    //get your input with gets() or cin >> or whatever ...
    
    char *p = linebuff;
    int numindex = 0;
    
    while(TRUE){
    	while(*p==' ')p++;//absorb spaces
    	nums[numindex++] = atoi(p);//put num in array
    	if(numindex == MAXNUMSPERLINE){//check for too many nums here
    	//do something ...
    	}
    	p = strchr(p,' ');//find next space
    	if(!p)break;//no more !
    	p++;
    }

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