What is preincrement and post increment?

• in post increment after evaluating the expression,the value need to be change.
  in pre increment without evaluating the expression ,the value need o be change.
• 10 years agoHelpfull: Yes(0) No(0)
• preincrement := first increment then evaluate
  example
  int i,j,k;
  i=10;
  j=20
  k=++i + ++j;
  k=11+21=32
  post increment:=first evaluate the increment
  example
  int i,j,k;
  i=10;
  j=20;
  k=i++ + j++;
  k=10+20=30;
• 10 years agoHelpfull: Yes(0) No(0)
• ++x is pre-increment and x++ is post-increment . i.e., in the first, x is incremented before being evaluated and in the second, x is incremented after being evaluated.
  
  Eg. • int x = 5;
  • printf("x=%dn", ++x);
  • printf("x=%dn", x++);
  
  Output is 6 & 6.
• 10 years agoHelpfull: Yes(0) No(0)