1. C Programming Chapters 11, . . .
C – Compiler Compilation
Tracing C programs
C Functions
C program Stack Structure

2. Memory map
(Global Data pointer)
I/O Devices

3. C Functions All C programs begin with the main Function:
#include <stdio.h> ; include libraries for compiler
#define Two = 2 ; “Two” will be replaced in code with 2
int x = 56; ; x is a global variable
int main () ; main has an “int” type return value {
int y = 47; ; y is a local variable
return 0; ; return the value “0” }

4. C Functions #include <stdio.h> int sum (int r, int s, int t);
int main() {
z = sum (x,y,z) + 65; }
int sum (int A, int B, int C)
int total; ; total is a local variable
total = A + B + C);
return total; ; return the sum

5. C Program int Func1(int x) #include <stdio.h> {
return Func2(x) + 1; }
int Func2(int x)
return Func3(x) + 1;
int Func3(int x)
return Func4(x) + 1;
int Func4(int x)
return x + 1;
#include <stdio.h>
int Func1(int x);
int Func2(int x);
int Func3(int x);
int Func4(int x);
int main() {
int A = 3;
int B = 5;
int C;
C = A + B;
C = Func1(C);
C = C + 1;
return 2; }

6. C Program Compilation Compile the program Look at the files
Load them into the LC-3 simulator
Execute the program and observe its stack