/in/lab5.c: In function 'printd':
/in/lab5.c:85:24: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
         if(expr[i]>='A'&&expr[i]<='Z'||expr[i]>='a'&&expr[i]<='z'){
            ~~~~~~~~~~~~^~~~~~~~~~~~~~
/in/lab5.c: In function 'main':
/in/lab5.c:218:12: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
         if(expr[size(expr)] = ';') printf("%lf\n",work[name]);
            ^~~~