Sample Programs

C Programming (COP 2220)

This is an index to some sample C programs you will find instructive. Remember, the best way to learn a programming language is to study, modify, and execute existing programs.

• Sentinel-controlled loop with accumulation: payroll.c
• Compute weighted average: grader.c
• Using switch and getchar: pqcount.c
• Using switch, ASCII codes, "loop and a half": namenbr.c
• Array fill, display, sum: sumArray.c
• Date of Easter computation: easter.c
• Determine if year is a leap year: isleap.c
• Determine day-of-the-week: dowdemo.c
• Determine number of days in a month: dinmdemo.c
• Using the strtok function: token.c
• Searching for substrings with strstr: strstr.c
• Changing case of a string: chgcase.c
• Arrays of pointers to strings: ex7-9.c (convert month number to month name)
• Pointers to functions: order.c
• A "Point" structure program
• Obtaining filename to open interactively: filetest.c
• Printing a file: printFile.c
• Dynamic memory allocation: getMem.c
• Direct-access file transaction program: fileTrans.c
• This isn't really a C programming example, because it's written in MS QuickBasic, and was distributed as a source example with release 4.5. It does a good job providing a visual comparison of five different sorting algorithms: insertion, bubble, heap, shell, and quick. Run it in a command console window: sortdemo.exe