History of Programming Languages
History of Programming Languages
CS181: Programming Languages
Topics:
Historical overview of features introduced by various programming languages Code examples Family tree of programming languages Programming languages naming patterns
Vladimir Vacic, University of California at Riverside
2
Plankalk?l
1942-45, Konrad Zuse Used to program his Z4 computer Introduced:
the assignment operation if's (but no else's) loops
Vladimir Vacic, University of California at Riverside
3
Fortran
1954-57, J. Backus
Numeric computing
Introduced:
Parameter pass by value Static allocation Separate compilation (because hardware failures were very frequent, length of a program could not exceed 300/400 lines) (FORTRAN II) Modularity (separately developed subprograms) Sharing of data among modules via a global environment
Still in existence today, mostly in science/academia
Vladimir Vacic, University of California at Riverside
4
Fortran
PROGRAM Rad ! Simple FORTRAN program
REAL P,R,C IF (.NOT. (R = 0.0)) THEN
P = 3.1415926 R = 2.5 C = P * R PRINT *, "C = ", C END IF END
Vladimir Vacic, University of California at Riverside
5
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