So, hey guys.. This is our very first lecture. In this lecture we will see the history of C language. Here I have tried to give short and essential information about the C language. Hope you would like it..😊 So, very firstly we will see how our first program looks like.. Program : #include <stdio.h> int main () { printf ( "Hello World..!" ); return 0 ; } Output : Hello World..! In the following way our program is always devided into the parts as shown in fig. below. fig. parts of program Now, we use an english language to writer our C programs. So, let us see which are those characters, digits and symbols which are allowed to use while writing the programs. As well as we see that what is an identifier..? and what is variable..? Now as we know what the variable is, we should also know about the type of variables and what are rules for declaring the variables.. So, let's study what ar...