[SPCA] Start arrays overview

semester3/spca/code-examples/00_c/03_arrays.c

@@ -1,3 +1,15 @@
+#include <stdint.h>
+#include <stdio.h>
+
 int main( int argc, char *argv[] ) {
+    int data[ 10 ];                  // Initialize array of 10 integers
+    data[ 5 ] = 5;                   // element 5 is now 5
+    *data = 10;                      // element 0 is now 5
+    printf( "%d\n", data[ 0 ] );     // print element 0 (prints 10)
+    printf( "%d\n", *data );         // equivalent as above
+    printf( "%d\n", data[ 5 ] );     // print element 5 (prints 5)
+    printf( "%d\n", *( data + 5 ) ); // equivalent as above
+    int multidim[ 5 ][ 5 ];          // 2-dimensional array
+                                     // We can iterate over it using two for-loops
     return 0;
 }

semester3/spca/parts/00_c/01_basics/04_arrays.tex

@@ -0,0 +1,7 @@
+\newpage
+\subsubsection{Arrays}
+\lC\ compiler does not do any array bound checks! Thus, always check array bounds.
+Unlike some other programming languages, arrays are \bi{not} dynamic length.
+
+The below snippet includes already some pointer arithmetic tricks. The variable \texttt{data} is a pointer to the first element of the array.
+\inputcodewithfilename{c}{code-examples/00_c/}{03_arrays.c}