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validation

i am doing a program where I have to input an equation and from there , there must be only 5 inputs from the keyboard if more than 5 inputs are done the pgm must display an error message. The program is as follows:

int var1, var2, result;
string eq, op;

cout << "Type the equation : ";
cin >> var1 >> op >> var2 >> eq >> result;

example if the user types the equation :
2 + 3 = 5 (5inputs)
but

2 + 3 = 0 + 5 ( invalid bcos more than 5 inputs r done)

how do I do the validation?
Oct 11 '06 #1
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