Use exit() function

http://www.cprogramming.com/fod/exit.html

did you try debugging using gdb?

Its possible that what the original thread starter meant by 'swap' was to actually interchange the pointers to the read-only strings as Dave and Dream2Code have suggested.

That is just the reverse of the aforementioned algorithm.

Explanation- Scan the input string from left to right. Whenever you see an operand, just push it onto a stack. When you encounter an...

The expression contains only operands. Where are the operators?

If you have a string in infix, ie. in form A+B, and you wish to have it in the form AB+, you can use the Shunting Yard Algorithm...

printf("Trip Summary");

You are missing the semicolon here

and here

printf("Enter Total amount of fuel required");

and why do you have the return statement outside the main function?

Hi,

What is the conversion character for long double in gcc?