Tested to work right

prob2.s

.text
.globl
getCharAsInt:
pushl %ebp          
movl %esp, %ebp     
movl 8(%ebp), %eax         
movl 12(%ebp), %edx  
addl %edx, %eax
movb (%eax), %al
movsbl %al, %eax
popl %ebp           
ret