Getting Started

Chapter 8: C Pointers and Arrays

inter

rrays, but they

e mu grammers (and those of us with

pidly an issue in microcontrollers, and

inter rn how pointers and arrays relate and apply it in

n faster. Let’s look at some examples.

.

y[6];

ts as s bytes sized memory locations, since each

e‘ve

howdy[0] = ‘h’;

;

;

e the array:

,’\0’};

char greet[] = "Hello, world!\r*";

for(int i =0 ; greet[i] != '*'; i++)

{

sendchar(greet[i]);

}

}

Po s and arrays have a strong relation in C. Any array-subscripting operation
can also be done with pointers. Pointers are said to be faster than a
ar ch harder to understand for novice pro
ra diminishing brain cells). Since speed is
po s are faster we need to lea
code segments that must be made to ru

char owdy[6]; h

Sets aside an array of six contiguous byte-sized memory locations

int howd

Se ide an array of twelve contiguou
int requires two bytes of memory.

W seen before how to assign data:

howdy[1] = ‘o’
howdy[2] = ‘w’
howdy[3] = ‘d’;
howdy[4] = ‘y’;
howdy[5] = ‘\0’;

or we can do this when we defin

char howdy[] = {‘h’,’o’,’w’,’d’,’y’

Here’s a puzzle for you:

char *confuseus;
char c;