C Program Learning Part-4

Reading a single character can be done by using the function getchar. The getchar takes the following form: variable_name = getchar();

char name;

name = getchar();

main() 

{ 

char answer;

printf(“Would you want to know my name.\n”);

printf(“Enter Y for YES and N for NO”);

answer = getchar();

if(answer == ‘Y’ || answer == ‘y’)

printf(“My name is Billah.”);

else 

printf(“You are good for nothing.”); 

}

 WRITING A CHARACTER 

putchar is used for writing character one at a time as shown below putchar (variable_name);

main()

{

char alphabet;

printf(“Enter an alphabet.\n”);

putchar(‘\n’);

alphabet = getchar();

if(islower(alphabet))

putchar(toupper(alphabet));

else

putchar(tolower(alphabet));

}

Formatted Input: 

scanf(“control string”, arg1, arg2,……….., argN); 

Inputting Character Strings:

%wc or %wc

int no;

char name1[15], name2[15], name3[15];

printf(“Enter serial and name one. \n”);

scanf(“%d %15c”, &no, name1);

printf(“%d %15s”, &no, name1);

printf(“Enter serial and name two. \n”);

scanf(“%d %s”, &no, name2);

printf(“%d %15s”, &no, name2);

printf(“Enter serial and name three. \n”);

scanf(“%d %15s”, &no, name3);

printf(“%d %15s”, &no, name3);

Formatted Output:

For Printing an integer number is : %w d

For Printing an integer number is : %w p f

For printing the output of the number y=98.7654

Printing of a Single Character:

A single character can be displayed using the format: %wc

Printing of Strings:

The format is : %w.ps

For Printing a string “NEW DELHI 110001”