Control statement FORTRAN

FORTRAN, the most widely used language at that time, used a complicated format control statement for all input or output in the program, a requirement too complicated for most students, particularly for those not taking science or engineering. 

Additional FORTRAN statements should be put after CALL START, usually between the CALL INPUT and CALL EXIT statements. CALL INPUT is part of the basic deck for direct programmers as well as for control card users, because it is customary to read in the data by control cards, and this is usually the first operation in any run. 

Listed below for each control card is either the subroutine which has the same effect or equivalent FORTRAN statements. Note that any change made by FORTRAN statements to the components or multipliers must be followed by a CALL ROWS(—1) instruction to update the rows. 

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