What is the difference between ++i and i++ in C programming?

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Ashutosh Singh

B.Tech tutor for IIT JEE Mains and 12 board - Maths & Physics.

Consider a=1; b=a++ b=a++; is equivalent to two statements, b=a; a = a+1;. The statement b=a++; causes the value of a to be assigned to b and then increments the value of a. So, the resultant b value is 1 but the resultant value of a is 2. Now consider a=1; Where as b= ++a; is equivalent to these two...
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Consider a=1; b=a++ b=a++; is equivalent to two statements, b=a; a = a+1;. The statement b=a++; causes the value of a to be assigned to b and then increments the value of a. So, the resultant b value is 1 but the resultant value of a is 2. Now consider a=1; Where as b= ++a; is equivalent to these two statements a= a+1; b=a; . In this case the value of a is first incremented and then assigned to b. So, the final value of a as well as b are 2. read less
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