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Well you're just going to have to post your latest code.



int size;
int p1Payoffs[size/2], p2Payoffs[size/2];

file = fopen("prisoners_dilema.txt", "r");
if(file==NULL){...

> int size = cols*rows;
C does not predict the future, so do this after you have read rows and cols.

> for(a=0; a<size*2; a;)
Since your arrays are size/2, running to size*2 is a big overstep....