Day 2

• Lecture Topics
• programs, main, comments
• Style Guidelines
• gcc -Wall -Werror -ansi -pedantic miles2feet.c -o m2f
• make files
• testing with checkit.h
• input/output
• printf: %d for int, %f for double, %c for char
• scanf: %d for int, %lf for double (that is the letter 'l' not the number '1'), %c for char
• see examples: i.c and o.c
• Example: calculate monthly payment and total loan cost
• Write header comment
• Write main and makefile
• Write test_cases() with one test
• Write calcPayment() to make test pass
• Write a second test
• Write calcPayment() to make tests pass
• Refactor
• Write test for convertToTwoDecimals()
• Write convertToTwoDecimals()
• Write I/O in main()
• See final files: loan.c, checkit.h, makefile
• Project 1 due Friday
• Lab 2 assigned in Blackboard