Write a C program to swap two numbers without using 3rd variable?

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int a=10,b=20; a = a+b ; b = a - b ; a = a - b ; this is the way you can swap two numbers..... call 7 9 9 0 5 4 5 9 8 1 for more queries..... Mr. Paresh Patel. (B.Sc(MATHS), MCA, MBA(IT & Marketing).
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Logic A=A+B; B=A-B; A=A-B;
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Concatenate into a comma delimited string Reverse it Split the string to get the revised array
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