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

In the array examples before, we have hard-coded the size of the array. In modern C, it's possible to declare arrays without knowing their size until run time.

Here is how to do it:

#include <stdio.h>

int main(void) {
    int n;
    // We discuss scanf later. For now, note that n holds the input integer.     
    scanf("%i", &n);
    printf("Entered length: %d\n", n);

    int grades[n];
    int i;
    for (i = 0; i < n; i++) {
      grades[i] = i;
      printf("grades[%d] = %d\n", i, grades[i]);
    }
    return 0;
}

dockerforC.tar.gz

We haven't covered `scanf` yet, but basically on **line 6** we expect the user to enter an integer, which is then used to create an array `grades` of that size on **line 9**.
 
# Pros and cons
* The obvious benefit of allowing variable-length arrays is that we don’t have to know in advance of running our program how much memory to allocate for our array variables. 

* The downside of this is that we have to guard against the possibility that our program will attempt to allocate too much memory.

To implement something like the above on a local machine, we could have made minor modifications to the above program, and executed it from the command-line by passing it the size of the array as an argument. We'll see how to do this in the next lesson.

Learn how to create arrays of variable length without specifying the array size at compile time. 

Variable-Length Arrays

Learn how to create arrays of variable length without specifying the array size at compile time.

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

Variable-Length Arrays