What is a null statement in C? -


i want know exactly, null statement in c programming language? , explain typical use of it.

i found following segment of code. 

for (j=6; j>0; j++) ;

and

for (j=6; j>0; j++)

from msdn page:

the "null statement" expression statement expression missing. useful when syntax of language calls statement no expression evaluation. consists of semicolon.

null statements commonly used placeholders in iteration statements or statements on place labels @ end of compound statements or functions.

know more: https://msdn.microsoft.com/en-us/library/1zea45ac.aspx

and explain typical use of it.

when want find index of first occurrence of character in string 

int a[50] = "lord of rings"; int i;  for(i = 0; a[i] != 't'; i++)     ;//null statement //as no operation required

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