Error in 'while' loop MS VS8

[micropro]

i want to know why my compiler microsot visual studio 8 refuse this wile loop in the runing mood and begin to debug

char a [] = "(12+12)"  ;  //for example
int i=0;
while ( a[i] ! = '+'  ||  a[i] ! =  '-' || a[i] ! = '*' ) 
{
++i;
cout<<a[i];
) 
 

if this is wrong way to wirte it this way , what's the wright one

[JosAH]

i want to know why my compiler microsot visual studio 8 refuse this wile loop in the runing mood and begin to debug
char a [] = "(12+12)" ; //for example
int i=0;
while ( a[i] ! = '+' || a[i] ! = '-' || a[i] ! = '*' )
{
++i;
cout<<a[i];
)

if this is wrong way to wirte it this way , what's the wright one

Your while clause (condition) is incorrect. Suppose a[i] == '+', most certainly
it isn't equal to '-' and your while clause is true again.

Better change those || to &&

kind regards,

Jos

[mobbyreload]

i want to know why my compiler microsot visual studio 8 refuse this wile loop in the runing mood and begin to debug
char a [] = "(12+12)" ; //for example
int i=0;
while ( a[i] ! = '+' || a[i] ! = '-' || a[i] ! = '*' )
{
++i;
cout<<a[i];
)

if this is wrong way to wirte it this way , what's the wright one

Your condition in while loops will always remain true in this case so the loop will not terminate, so MS VS starts to debug when array index 'i' crosses array length and you try to cout unauthorized memory area. In this case it will give you Access Violation Error message if you try to run the executable directly by clicking on it.