Reading a character in #C (module 14)
In this section we will discuss on reading a character using many inbuilt #C functions like scanf, getchar() etc.
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This is the 14th module on learning C with us. Earlier we discussed on the basic introduction and structure of C, preprocessor it's features, intermediate and executable codes. compilation and execution process of a C program. And keywords and identifiers, data types, variables and constants, scope of variables, operators and expressions in C. Type casting in #C.
In this section we will discuss on reading a character using inbuilt #C functions like scanf, getchar, getch,getche.
Reading a character :-
The simplest of all input/output operations is reading a character from the 'standard input unit (usual the keyboard) and writing it to the standard output unit (usually the screen).
Reading a single character can be done by using the function getchar. This can also be done with the help of the scanf function.
The getchar takes the following form:
variable_name = getchar();
variable_name is a valid C name that has been declared as char type. When this statement encountered, the computer waits until a key is pressed and then assigns this character as a value to getchar function. Since getchar is used on the right-hand side of an assignment statement the character value of getchar is in turn assigned to the variable name on the left.
For example :
char name;
Input :
| #include main() { char answer; printf("Would you like to know my name?n"); printf("Type Y for YES and N for NO: "); answer = getchar (): /* ..Reading a character... */ if(answer == 'y' ||answer =='Y') printf("\n\nMy name is BUSY BEE n"); else printf("\n\nYou are good for nothing\n"); } |
Output :
| Would you like to know my name? Type Y for YES and N for NO: Y My name is BUSY BEE Would you like to know my name? Type Y for YES and N for NO: n You are good for nothing |
In next module we will discuss on writing a character. For more information please be updated with us only on Www.newsandstory.
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