![• When we use %s for scanf,
it only scans string before
white space
• White spcace can be space,
tab or new line
scanf() for string
#include<stdio.h>
void main(){
char sen[50];
scanf(“%s”,sen);
printf(sen);
}](https://image.slidesharecdn.com/unit3inputoutput-220721105951-177079e4/85/Unit-3-Input-Output-pptx-30-320.jpg)
![scanf() for string
#include<stdio.h>
void main(){
char sen[50];
scanf(“%[^n]”,sen);
printf(sen);
}
• Reads data even after
white space also](https://image.slidesharecdn.com/unit3inputoutput-220721105951-177079e4/85/Unit-3-Input-Output-pptx-31-320.jpg)
![gets() and puts()
#include<stdio.h>
void main(){
char sen[50];
gets(sen);
puts(sen);
}
• gets() can read
sentence.
• puts() can write
sentence.](https://image.slidesharecdn.com/unit3inputoutput-220721105951-177079e4/85/Unit-3-Input-Output-pptx-35-320.jpg)
Unit 3 Input Output.pptx
- 1. Dinesh Maharjan, 2022 Programming in C Input Output Instructor: Dinesh Maharjan 2022
- 9. #include<stdio.h> void main(){ printf("Name:tt "Dinesh""); printf("nMobile No:tt 9841429635"); printf("nSection: tt D"); printf("a"); printf("n"); printf("HellorNepal"); } Escape Sequence
- 16. Place Holder Data Type Displayed %i , %d int, long, short, char, unsigned int Decimal Value, ASCII value %u Unsigned int Decimal Value %o Int Octal Value %x, %X Int Hexadecimal %f Float Float value with zeros %g %G Float, Double Float value with no zeros %e, %E Float, Double Float in exponent %lf Double Double value %c Char Single character %s Array of Character String
- 17. #include<stdio.h> void main(){ printf("Decimal No =%5d",123); printf("nOctal No =%5o",123); printf("nHex No =%5x",123); printf("nFloat with g =%5g",123.456); printf("nFloat with f =%5f",123.4560); printf("nFloat with f =%5.1f",123.4560); printf("nFloat with lf =%5lf",123.456); printf("nFloat with e =%5e",123.456); printf("nSingle Char = %5c",'A'); printf("nString %5s","Hello"); } printf Decimal No = 123 Octal No = 173 Hex No = 7b Float with g =123.456 Float with f =123.456000 Float with f =123.5 Float with lf =123.456000 Float with e =1.234560e+002 Single Char = A String Hello
- 18. #include<stdio.h> void main(){ int a=45; int *ptr=&a; unsigned int b=56; printf("Address of a in decimal =%dn",&a); printf("Address of a in hexadecimal =%xn",&a); printf("Content of pointer =%p",ptr); printf("Decimal No =%d",b); } Address of Variable
- 29. • Single character • #include<stdio.h> • void main(){ • char ch; • ch=getchar(); • putchar(ch); • } getchar(), putchar()
- 30. • When we use %s for scanf, it only scans string before white space • White spcace can be space, tab or new line scanf() for string #include<stdio.h> void main(){ char sen[50]; scanf(“%s”,sen); printf(sen); }
- 31. scanf() for string #include<stdio.h> void main(){ char sen[50]; scanf(“%[^n]”,sen); printf(sen); } • Reads data even after white space also
- 32. getc() and putc() #include<stdio.h> void main(){ char ch; ch=getc(stdin); putc(ch,stdout); } • Reads single character from specified source • Write single character to specified resource
- 33. getch() #include<stdio.h> void main(){ char ch; ch=getch(); putchar(ch); } • Non standard function • Not part standard C • Defined in conio.h • getch() reads a single character without enter • It does not echo the input character.
- 34. getche() #include<stdio.h> void main(){ char ch; ch=getche(); putchar(ch); } • Non standard function • Not part standard C • Defined in conio.h • getche() reads a single character without enter • It echos the input character.
- 35. gets() and puts() #include<stdio.h> void main(){ char sen[50]; gets(sen); puts(sen); } • gets() can read sentence. • puts() can write sentence.
- 40. Symbolic Constant #include<stdio.h> #define PI 3.14 void main(){ double r,area,peri; puts("Enter the radius"); scanf("%lf",&r); area=PI*r*r; peri=2*PI*r; printf("Area =%.2f",area); printf("nPerimeter=%.2f",peri); }