# include 
Int main () 
{
Int num1, num2; 
char ch; 
Float the result; 
Printf (" do input: "); 

Scanf_s (" % d % d % c ", & amp; Num1, & amp; Ch, & amp; Num2); 

The switch (ch) 
{
A case of '+' : num1 + num2; break; 
Case '-' : the result=(float) num1 - num2; break; 
Case: '*' result=(float) num1 * num2; break; 
Case '/' : 
If (num2==0) 
{
Printf (" you're wrong "); 
break; 
} 
The else 
{
Result=num1/num2; 
break; 
} 


} 




Printf (" the result is: % 2 f \ n ", result); 



return 0; 
}