Switch Statement

[ahmed]

I wanted to know that how can you use switch statement like you do in if
for e.g
if(x<80 && c>=90)
cout<<"\n Grade is A- "


how can i do this with switch statement?

[amrosama]

switch statements evaluate integral or char values (doest use '<' or '>')
you will have to make a char variable to hold the grade, the code can look like this

char grade;
if(x<80 && c>=90) grade='A'
if(x<70 && c>=80) grade='B'

switch (grade)
{
     case 'A':
             cout<<"\n Grade is A- ";
             break;
    case 'B':
             cout<<"\n Grade is B- ";
             break;

    default:
       cout << "grade wasnt assigned";
       break;
}

[outsid3r]

Like amrosama told, you can't use <, >, and other operators. It must be a constant value, what you want can be done with select case statements in visual basic, but i don't recomend you to learn visual basic

[dcs]

how can i do this with switch statement?

This is uglier than it looks, and it looks ugly:

char *foo(int grade)
{
   char *letter = "F";
   switch ( grade )
   {
   case 100: case 99: case 98: case 97: letter = "A+"; break;
   case  96: case 95: case 94: case 93: letter = "A";  break;
   case  92: case 91: case 90:          letter = "A-"; break;
   case  89: case 88: case 87:          letter = "B+"; break;
   case  86: case 85: case 84: case 83: letter = "B";  break;
   case  82: case 81: case 80:          letter = "B-"; break;
   case  79: case 78: case 77:          letter = "C+"; break;
   case  76: case 75: case 74: case 73: letter = "C";  break;
   case  72: case 71: case 70:          letter = "C-"; break;
   case  69: case 68: case 67:          letter = "D+"; break;
   case  66: case 65: case 64: case 63: letter = "D";  break;
   case  62: case 61: case 60:          letter = "D-"; break;
   default:  break;
   }
   return letter;
}

But it's on the subject of the question asked.