C programming tokens & error types

2. NOTES

3. NOTES

4. NOTES

5. NOTES

6. NOTES

7. NOTES

8. NOTES

10. NOTES

11. NOTES

12. NOTES

13. NOTES

14. NOTES

15. NOTES

16. Input from User –
#include<stdio.h>
#include<conio.h>
void main()
{
int a, b,c;
clrscr();
printf(“Enter 1st Numbern”);
scanf(“%d”,&a);
printf(“Enter 2nd Numbern”);
scanf(“%d”, &b);
printf(“Value of 1st No = %dn”,a);
printf(“value of 2nd No = %dn”,b);
c=a+b;
printf(“Sum of two no = %dn”, c);
getch();
}

17. NOTES

18. NOTES
False

19. Increment & Decrement Operator
Increment & Decrement Operator is two type
i. Pre Increment / Decrement Operator -
Increase/ Decrease the variable values then print e.g. ++a / --a
ii. Post Increment / Decrement Operator –
Print the variable values then Increase / Decrease e.g. a++/a--
#include<stdio.h>
#include<conio.h>
void main()
{
int a=5;
clrscr();
printf(“Value of a in 1st Step = %dn”,a);
printf(“Value of a in 2nd Step = %dn”,++a);
printf(“Value of a in 3rd Step = %dn”,a);
printf(“Value of a in 4th Step = %dn”,a++);
printf(“value of a in 5th Step = %dn”,a);
getch();
}

20. EXTRA

21. NOTES

22. NOTES

23. NOTES

24. NOTES

25. NOTES

26. NOTES

27. Syntax Error
EXTRA
It occurs when grammatical error has found.
EX:-
int a
Here semicolon sign missing so it is related
through ‘C’ program grammar So, Syntax error occur.

28. Symantic Error
This type of error occur when statement
are not meaningful.
EX:-
a+b = c;
It is wrong assignment here
statement are not meaningful here should
be c = a+b.
EXTRA

29. Type Error
This type of error occur when datatype
mismatch.
Ex:- int a = 3.5;
char c = 4;
EXTRA
Here a is integer variable so it can
not hold floating value and in second line c is
the character variable and it can not integer
value.

30. Logical error
This type of error occur when your statement
is logically incorrect.
Ex:-
int i = 1;
while(i>=10) /*value of i never be greater than 10*/
{
printf(“%dn”,i);
}
EXTRA

31. Run time Error
This type of error occur during run time or
execution time.
Ex:- You are trying to open a file which
does not exist it will occur run time error.
Its another example is , you are making
Infinite loop.(endless loop).
EXTRA