Input of Data Cards (Standard Input)
Günther Lamprecht · 1983
In the previous programming examples, the variables received their values by explicit assignment. Thus the programs were exclusively determined for the values appointed: changing these values would have meant changing the program. In many cases, we want to write a general program and attach the values to the variables only when the program is actually running. We can achieve this by punching the values for the variables on separate data cards. These cards can be altered from one program course to the next.