strings / pointers / strchr

`strchr` in C, step by step

This presentation shows how strchr() traverses palabra, returns a pointer to the found character, and how the position is calculated with ptr - palabra.

1) CodeActive line: 1

1char palabra[] = "computadora";

2char *ptr = strchr(palabra, 'u');

3if (ptr != NULL) {

4 printf("Encontrado: %c en la posicion %ld\n", *ptr, ptr - palabra);

5} else {

6 printf("No se encontro el caracter\n");

8return 0;

Step 1: The array palabra is created with the text "computadora".

Step 1 / 9

2) State

palabracomputadora

buscado'u'

ptrNULL

*ptr-

ptr - palabra-

condicion-

3) Memory

ptr points tonothing yet

offset-

4) Simulated Console

./strchr-demostdout