// Justin C. Miller
// 3-27-2001
// made for: http://www.geocities.com/neonprimetime.geo/index.html
// made on: Unix Lab g++ compiler
// Title : rolling dice (2 dimensional array)
// Description: rolls dice, keeps track with a table of the rolls for each possible pair
// notice: (1,2) is different that (2,1) in this example (order matters)
#include
#include
#include
#include
int rolldice() ;
int main() {
srand(time(0)) ;
int array[6][6] ;
int i, j ;
int rolls = 2500 ; // number of rolls
for(i = 0 ; i < 6 ; i++)
for(j = 0 ; j < 6 ; j++)
array[i][j] = 0 ;
for(i = 0 ; i < rolls ; i++)
array[rolldice()-1][rolldice()-1]++ ;
cout << "Table after " << rolls << " rolls..." << endl ;
cout << " " ;
for(i = 1 ; i <= 6 ; i++) cout << setiosflags(ios::fixed) << setw(4) << i ; // column number
cout << endl ;
for(i = 0 ; i < 6 ; i++){
cout << (i+1) << ".) " ; // row number
for(j = 0 ; j < 6 ; j++)
cout << setiosflags(ios::fixed) << setw(3) << array[i][j] << " " ;
cout << endl ;
}
cout << endl ;
cout << "% after " << rolls << " rolls..." << endl ;
cout << " " ;
for(i = 1 ; i <= 6 ; i++) cout << setiosflags(ios::fixed) << setw(5) << i ; // column number
cout << endl ;
for(i = 0 ; i < 6 ; i++){
cout << (i+1) << ".) " ; // row number
for(j = 0 ; j < 6 ; j++)
cout << setiosflags(ios::fixed | ios::showpoint) << setprecision(2) << ((double)array[i][j] / (double)rolls) << " " ;
cout << endl ;
}
return 0;
}
int rolldice() { return (rand() % 6 + 1) ;}
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