Week 1: Introduction - Elementary Data and Control Structures in C (37)

Assignments

In C, each statement is terminated by a semicolon ;
Curly brackets { } used to enclose statements in a block
Usual arithmetic operators: +, -, *, /, %
Usual assignment operators: =, +=, -=, *=, /=, %=

The operators ++ and -- can be used to increment a variable (add 1) or decrement a variable (subtract 1)

It is recommended to put the increment or decrement operator after the variable:

         // suppose k=6 initially
k++;     // increment k by 1; afterwards, k=7
n = k--; // first assign k to n, then decrement k by 1
         // afterwards, k=6 but n=7

It is also possible (but NOT recommended) to put the operator before the variable:

         // again, suppose k=6 initially
++k;     // increment k by 1; afterwards, k=7
n = --k; // first decrement k by 1, then assign k to n
         // afterwards, k=6 and n=6