jordi@iot-clot:~/Documents/curs2020-2021/m03/daw/20210324/20190411_daw_m03uf2_ord/sol$ gcc -g cc03.c -o ex01
jordi@iot-clot:~/Documents/curs2020-2021/m03/daw/20210324/20190411_daw_m03uf2_ord/sol$ gdb ex01
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Reading symbols from ex01...
(gdb) list 20,34
20	}
21	
22	int nDigitControl(char *sz,int* pN){
23		int nSuma = 0,nDC;
24		
25		if(nQuantsCaracters(sz) == 8)
26			pN += 2;
27		while(*sz){
28			nSuma += (*sz - '0') * *pN;
29			sz++; pN++;
30		}
31		nDC = 11 - nSuma % 11;
32		if(nDC == 11) nDC = 0;
33		if(nDC == 10) nDC = 1;
34		
(gdb) break 29
Breakpoint 1 at 0x11a7: file cc03.c, line 29.
(gdb) run
Starting program: /home/jordi/Documents/curs2020-2021/m03/daw/20210324/20190411_daw_m03uf2_ord/sol/ex01 

Breakpoint 1, nDigitControl (sz=0x7fffffffdfb7 "12345678", pN=0x7fffffffdf78)
    at cc03.c:29
29			sz++; pN++;
(gdb) print nSuma
$1 = 4
(gdb) next
27		while(*sz){
(gdb) next
28			nSuma += (*sz - '0') * *pN;
(gdb) next

Breakpoint 1, nDigitControl (sz=0x7fffffffdfb8 "2345678", pN=0x7fffffffdf7c)
    at cc03.c:29
29			sz++; pN++;
(gdb) print nSuma
$2 = 20
(gdb) next
27		while(*sz){
(gdb) next
28			nSuma += (*sz - '0') * *pN;
(gdb) next

Breakpoint 1, nDigitControl (sz=0x7fffffffdfb9 "345678", pN=0x7fffffffdf80)
    at cc03.c:29
29			sz++; pN++;
(gdb) print nSuma
$3 = 35
(gdb) quit
A debugging session is active.

	Inferior 1 [process 228146] will be killed.

Quit anyway? (y or n) y
jordi@iot-clot:~/Documents/curs2020-2021/m03/daw/20210324/20190411_daw_m03uf2_ord/sol$