Questions based on C

ASCII means American Standard Code for Information Interchange

Q1:What is C?
Ans:C is high level programing language and It was developed by Dennis M.Ritche along unix and later was developed as an outgrowth of BCPL(Basic Combined Programming Language)
by Martin Richards

Q2:what is datatype? and How many types?
Ans:A datatype defines a set of values and the operations that can be performed on them.

Datatype
Description
Size(bytes)
Range 

char
single character
1
0 to 255 

int
an integer
2
-32767 to +32767 

float
floating point no.
4
approx 7 digits of precision 

double
floaing point no.
8
approx 15 digits of precision 



Q3:Steps in learning C language are: 

Ans:1.Character Set Alphabets,Digits and Special Symbols 

2.Datatypes,Constants,Variables and Keywords 

3.Instructions 

4.Functions,Program 

Q4:Rules to write C program 

Ans:1.All C statements must end with semicolon. 

2.C is case sensitive. 

3.Braces must always match upon pairs 

4.comments cannot be enclosed. 

Ex:/*A simple C program*/ is not valid 

5.A comment can be split into one or more lines  

Q:what are preprocessor commands? 

Ans:C supports two state statements.They are 1.#include 

2.#define 

Q:What is function? 

Ans:A function is a self contained block of statements that perform a coherent task of some kind. 

Q:what is an Operater? 

Ans:An operator is a symbol that tells the computer to perform certain mathematical or logical manipulations. 

Q:Write a small Programe to addition of Two Numbers 

Ans: /****************************** 

* To Addition of two Numbers * 

* Author :- Nagarjuna        * 

******************************/ 

#include<stdio.h> 

void main() 

{ 

int a,b,c; 

printf("Enter Two Numbers : "); 

scanf("%d%d",&a,&b); 

c=a+b; 

printf("The Result is : %d",c); 

}



Q:what is an array? 

Ans:An array is a collection of elements of similar types.