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aw thanks..i already solved it. ur both right that the error is somewhere in the code. and im done weeee :wink:

i have this error. what's wrong with this?



int isOperand(char a) {


if(a<='9'&&a>='0')
return 1;
else

ok i have this activity which i dont know if it's really the correct output on the input ones.

i have this problem making two stacks and two queues.
A.Input stack: used to store all user input...