1. Lab 1 – Data Types
"Using C code, determine the size of signed and unsigned char, int, and long integral data types.
Demonstrate the problems of overflow.
Show how fractional numbers are represented in a computer.
Demonstrate problems that arise when using floating point data types."
BYU CS 124
Lab 1 - Data Types

2. Data Types Lab
Lab 1 – Data Types
Acquire a Texas Instruments MSP430 LaunchPad Development Tool (R1.5).
Change RXD,TXD
from vertical to
horizontal position.
BYU CS 124
Lab 1 - Data Types

3. Data Types Lab
Lab 1 – Data Types
Install (if necessary) and execute TI's Code Composer Studio v5.x.
BYU CS 124
Lab 1 - Data Types

4. Lab 1 – Data Types Open a Terminal window in CCS Data Types Lab
BYU CS 124
Lab 1 - Data Types

5. Lab 1 – Data Types Compile and execute Lab01.c Data Types Lab
BYU CS 124
Lab 1 - Data Types

6. Lab 1 – Data Types Level of printf/scanf support = full Data Types Lab
BYU CS 124
Lab 1 - Data Types

7. TERMINAL Macros To output a string, use: TERMINAL(<string>);
Data Types Lab
TERMINAL Macros
To output a string, use:
TERMINAL(<string>);
To output a formatted number, use:
TERMINAL1(<format string>,<exp>);
To output a formatted number twice, use:
TERMINAL2(<string>,<exp>);
To output two different formatted numbers, use:
TERMINAL3(<string>,<exp1>,<exp2>);
Examples:
TERMINAL("\n\r** INTEGERS **");
TERMINAL1("21+2=%d",21+2);
TERMINAL2("char=%d (0x%2x)",127); TERMINAL3("Q4.4=%f (0x%2x)",(((long)32)/16.0), 32;
BYU CS 124
Lab 1 - Data Types

8. Data Types Lab
Lab 1 – Data Types
2 pts Your C program programmatically finds the largest values
for signed and unsigned chars, ints, and longs and the
most negative values for signed chars, ints, and longs.
2 pts Your C program programmatically demonstrates data type
overflow for chars, ints, and longs.
2 pts Your C program programmatically finds the largest positive
and most negative signed Q16.16 fixed point numbers.
2 pts Your C program programmatically illustrates floating point
round-off errors and demonstrates why it's a bad idea to
use equal comparisons with floating point numbers.
(2 examples please.)
2 pts Your C program programmatically demonstrates that
associate order of arithmetic operations is important.
BYU CS 124
Lab 1 - Data Types