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Old Pedant · 03-21-2011, 07:58 PM

Code:

			for(i=0;i<=numPoints;i++){
				if(y[i]>=0 && y[i+1]<0){
					change[numChange]=i;
					numChange++;
				}
				else if(y[i]>0 && y[i+1]<=0){

Your other loops only went to i < numPoints. With this loop, you are guaranteed to be 1 past the end of the array.

But then you make it worse:
How can you use i+1 if i is already at or past the maximum value for the array subscript??

03-21-2011, 07:58 PM	PM User \| #2
Old Pedant Supreme Master coder! Join Date: Feb 2009 Posts: 23,567 Thanks: 62 Thanked 4,058 Times in 4,027 Posts	Code: for(i=0;i<=numPoints;i++){ if(y[i]>=0 && y[i+1]<0){ change[numChange]=i; numChange++; } else if(y[i]>0 && y[i+1]<=0){ Your other loops only went to i < numPoints. With this loop, you are guaranteed to be 1 past the end of the array. But then you make it worse: How can you use i+1 if i is already at or past the maximum value for the array subscript?? __________________ An optimist sees the glass as half full. A pessimist sees the glass as half empty. A realist drinks it no matter how much there is.