What is the function of these codings" a[i]=a[i+1] & a[i+1]=a[1] " in C programming language?

a[k] here k is the memory location


a[i]=a[i+1]


means the data in a[i+1] is stored in a[i]


this type of statements might be used for sorting codes


where we need to interchange nos


to interchange nos within a array


temp=a[i]


a[i]=a[i+1]


a[i+1]=temp

What is the function of these codings" a[i]=a[i+1] %26amp; a[i+1]=a[1] " in C programming language?
its an array a[] every time array a[]'s location would increment in the first and in the second array a[]'s location would a[1]. This mean on different locations of a[] there would be different value. lets say the array is meant to store numeric value. array's start from 0 so at location a[0] something of numeric value is stored. and at location a[1] something else is stored. Array is easy to use instead of using lot of variables you can use an array and eliminate the use of multiple variables.
Reply:In c/c++, we use arrays for variables.


like a[1],a[2],a[3], etc.


eg: In a program, lets say variable a[1] holds the value 20 and a[2] holds 40. we can access the variable either by a[1] and a[2] or store a value 1 in new variable i and use it as a[i]. so a[i] will mean same as a[1].


So, considering that i=1, code a[i]=a[i+1] means a[1]=a[1+1] ie a[1]=a[2]. This means that the value of a[1] will be replaced by a value of a[2].


result of our eg: a[1] will now contain 40.


Left hand side (of the equals to sign "=") gets assigned the value from the Right hand side.