Learn C programming fundamentals like data types, control flow, functions, pointers, and memory allocation while exploring debugging, profiling, and optimization tools like GDB and gcc.

clang.tar.gz

RunC

RunCwithGNUflags

RunCwithlmflag

Run_go_file 

RunC-without_warning_flag

Compile-only

doNothing

Posix

RunCFileGo

Compile-go-file

Compile-go-debugging-file

OpenMP

Make

MPI4Threads

MPI8Threads

Octave

RunC-without_warning_flag-KS

This comprehensive course covers the fundamentals and advanced concepts of C programming to build a solid foundation for your programming journey. You’ll learn about essential topics like data types, variables, constants, and C statements, along with deeper explorations of control flow in C, including for loops and conditional statements in C. You’ll also learn about C functions, scope of variables, function arguments, and work with arrays, strings, and pointers in C.

You’ll gain hands-on experience with dynamic memory allocation, stack vs. heap, C standard library, and advanced topics such as binary files, input and output streams, and header files. The course also teaches compiling in C, linking in C, and debugging with tools like GNU debugger (GDB) and gprof for code profiling. By mastering these concepts, you’ll confidently program in C and optimize your code using gcc optimization flags.

Learn C

Which of the following is the correct way to declare a pointer?

Which of the following is the correct way to declare a pointer?

In the code below what is stored in `x`?
```C
int n = 50, x;
int *ptr; 
ptr = &n; 
x = *ptr;
```

In the code below what is stored in <code>x</code>?
<pre><code class="language-C">int n = 50, x;
int *ptr; 
ptr = &amp;n; 
x = *ptr;
</code></pre>

What will the code below print?

```C
int main(void) {
  int *vec;
  vec = malloc(sizeof(int) * 3);
  vec[0] = 4;
  vec[1] = 7;
  vec[2] = 11;
  printf(*(vec + 2));
  free(vec);
  return 0;
}
```

What will the code below print?
<pre><code class="language-C">int main(void) {
 int *vec;
 vec = malloc(sizeof(int) * 3);
 vec[0] = 4;
 vec[1] = 7;
 vec[2] = 11;
 printf(*(vec + 2));
 free(vec);
 return 0;
}
</code></pre>

What will be printed in the code below?
```C
struct Point { 
   int x, y, z; 
}; 
  
int main(void) { 
   struct Point p1 = {1, 2, 3}; 
   struct Point *p2 = &p1; 
   printf("%d %d", p2->y, p2->x); 
   return 0; 
}
```

What will be printed in the code below?
<pre><code class="language-C">struct Point { 
 int x, y, z; 
}; 
 
int main(void) { 
 struct Point p1 = {1, 2, 3}; 
 struct Point *p2 = &amp;p1; 
 printf(&quot;%d %d&quot;, p2-&gt;y, p2-&gt;x); 
 return 0; 
}
</code></pre>

Which of the following options pairs an argument passed to the function call `myFun(?)` with the corresponding  output?

```C
void myFun(int *x) {
  *x = *x * 4;
}

int main(void) {
  int y = 20;
  myFun(?);
  printf("y=%d\n", y);
  return 0;
}
```

Which of the following options pairs an argument passed to the function call <code>myFun(?)</code> with the corresponding output?
<pre><code class="language-C">void myFun(int *x) {
 *x = *x * 4;
}

int main(void) {
 int y = 20;
 myFun(?);
 printf(&quot;y=%d\n&quot;, y);
 return 0;
}
</code></pre>

Some garbage value followed by 2 and then by 1

What values are stored in memory locations allocated for `vec`?
```C
double *vec = calloc(3, sizeof(int));
vec[1] = 2;
vec[2] = 1;
```


What values are stored in memory locations allocated for <code>vec</code>?
<pre><code class="language-C">double *vec = calloc(3, sizeof(int));
vec[1] = 2;
vec[2] = 1;
</code></pre>

Let's put what you've learned about pointers to test!

Introduction to C Programming

Data Types in C

C Operators and C Expressions

Control Flow in C

Functions in C

Complex Data Types

Stack vs. Heap

Pointers in C

C string

Input and Output Stream

Macros and the C Preprocessor

Header Files, Compiling and Linking

C Debugger

Code Profiling

Parallel Programming in C

Project: Using a Bootstrapped t-test

Conclusion

Miscellaneous

Appendix: Setting Up the Environment

Quiz on Pointers