Practice Problems. 1)C Language is developed by- 1.Bjarne stroutstrup 2.Dennis Ritchie. 2)C is a a)middle level language b)high level language

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1 Practice Problems Prepared by:dilip Kumar Gangwar(Faculty,CS/IT DEPTT GEHU) 1)C Language is developed by- 1.Bjarne stroutstrup 2.Dennis Ritchie 3.R.Byrant 4.None of the above 2)C is a a)middle level language b)high level language c)low level language d)c is not a language 3)Header files have the extension a).c b).hf c).txt d).h 4)Header files have a)function declaration b)function definition c)both(a) and (B) d)none of these 5)printf() and scanf() are a)function and datatype respectively b) datatype and function respectively c)both functions d)data type and Datatypes respectively 6)main() is a a) function b)datatype c)variable d)header file 7)stdio.h is a a)header file b)datatype c)variable 8)stdio.h has declaration of a)getch() and clrscr()

2 b)printf() and scanf() c)scanf() and getch() d)only getch() 9)conio.h has declaration of a)getch() and clrscr() b)printf() and scanf() c)scanf() and getch() d)only getch() 10)return statement can be used to a)simply return the control to a function from where it has come without specifying any value b) return the control to OS c)return value to a function from where it has come d)return to home. e)both (A) and (b) 11)The statement int a is a) definition of a b)declaration of a c)both (a) and (b) d)none of these 12) The statement int a=10 is a a) definition of variable a b)declaration of a c)both (a) and (b)

3 d)none of these 13) int main() int a=10; int a=12; printf( %d,a); return 0; Ouput of it is---- a)10 12 b)12 10 c)10 d)12 e)compile time error redefinition of a 14)getch() is used to a)read or take the value from keyboard/user b)hold the screen c)print anything on screen d)none of these

4 15)scanf() is used to a)read or take the value from keyboard/user b)hold the screen c)print anything on screen d)none of these 16)printf() is used to a)read or take the value from keyboard/user b)hold the screen c)print anything on screen d)none of these 17)clrscr() is used to a)read or take the value from keyboard/user b)hold the screen c)print anything on screen d)clearing the previous output on the screen 18)Full form ofide a)integrated disk environment b) Integrated development environment c)integrated datum enum 19)IDE is a)virus b)hardware which helps to print our data

5 c)a software which provides the facility/environment to a programmar to develop programs in a programming language d) a software which provides the facility/environment to a programmar to crash the OS 20)Ascii value of semicolon ( ; ) and blank/space is a)59 32 b) what is the output of the following code..? Int main() Char s= c ; Printf( %d%d\n,sizeof(s),sizeof( c )); a. 1 1 b. 1 8 c )int emp id=341; Here variable name emp id is valid or not?give reason 23)Compiler like Turbo c/c++ or Dev c++ is a a)software b)hardware c)name of a datatype d)all of the above 24) What will be the output? int main() int a=10;

6 int b=5; int c=5; int d=2; int e=a*d +b/c; printf("%d",e); return 0; 1. error none 25) int main() float avg; int a=10; int b=5; int c=2; avg=a+b+c/3; printf("avg=%f",avg); return 0; output a)avg=5.66 b) avg= c) avg=5 d)error 26) int main() float avg;

7 int a=10; int b=5; int c=2; avg=(a+b+c)/3; printf("avg=%f",avg); return 0; output a) avg=5.66 b) avg= c) avg=5 d)error 27)int main() float avg; float a=10; int b=5; int c=2; avg=a+b+c/3; printf("avg=%f",avg); return 0; output a)5.66 b)5.0 c)

8 d)error 28)int main() float avg; float a=10; int b=5; int c=2; avg=(a+b+c)/3; printf("avg=%f",avg); return 0; output a) b)5.0 c)5 d)error 29)int main() float avg; float a=10; int b=5; int c=2; avg=(a+b+c)/3; printf("avg=%d",avg);

9 return 0; output a)5.66 b)5.0 c)5 d) or abnormal program termination 30) int main() Int x,y,z; x=20++; y=++x++; z=(x+y)--; printf( %d %d %d,x,y,z); return 0; Output A b) c)error L value required 31) main()

10 int a ; printf( %d,a); 1)0 2)9.88 c)a d)garbage value 32)size of a datatype is a)machine independent b)machine dependent c)always fixed 33) main() printf( %x,11); return 0; a)b or B b)14 c)x d)error 34) main()

11 printf( %o,11); return 0; a)13 b)11 c)x d)error 35)Comments in c are of a)2 types b)4 type c)1 type 36)Computer understand language of a)english b) 0 s and 1 s c)assembly language d)it is fool 37)1 byte= bits a)5 b)8 c)9 d)16 38)1 kb= byte a)2^10

12 b)2^20 c)2^30 39)1 MB= byte a)2^10 b)2^20 c)2^30 40)1 GB= byte a)2^10 b)2^20 c)2^30 41) main() char ch='a'; printf("%d %c",ch,ch); a)66 A b)65 A c)97 A d)error 42)

13 main() char ch=130; printf("%d",ch); a)-129 b)-126 c)-130 d)error 43) void main() float a= ; printf("%f ",a); printf("%.2f ",a); printf("%.3f",a); a) b) ) void main() float a1,b1,a2,b2,a3,b3; a1=2; b1=6.8; a2=4.2; b2=3.57; a3=9.82; b3=85.673; printf("%3.1f %4.2f\n",a1,b1); printf("%5.1f %6.2f\n",a1,b1);

14 printf("%7.1f %8.2f\n",a1,b1); a) b) )main() int a; int i=2; a=i++; printf("%d %d ",i++,a); printf( %d,i); a)3 2 4 b) ) ) ) main() int a; int i=2;

15 a=++i; printf("%d %d ",i++,a); printf("%d,i); a)3 2 4 b) ) ) ) main() int a; int i=2; a=++i + ++i; printf("%d %d",i++,a); a)4 7 b)8 4 c)4 8 d) )main()

16 int x=4,y=3,z;; z=x-- - y; printf("%d %d %d",x,y,z); a)3 3 2 b)4 3 1 c)3 3 0 d) ) If line 4 is changed to z=--x - y; the ouput is a)3 3 2 b)4 3 1 c)3 3 0 d) )A c variable cannot contain a)blank spaces b)hyphen 3)decimal point d)allof the above 51)a=30* evaluates to a)-32768

17 b)32768 c)10000 d)0 52) main() int i=4,j=-1,k=0,y,z; y=i + 5 && j +1 k+2; printf("%d %d ",i,j); z=i+5 j+1 && k+2; printf("%d %d",y,z); a) b) c) d) ) main() int i=-1,j=1,k,l; k=!i &&!j; l=!i j; printf("%d %d %d %d",i,j,k,l); a)

18 b) c) d) ) int main() int a=10; printf("%d %d %d",a,a++,++a); return 0; a) b) c) ) int main() int x=25,y=25,z; z=x==25&&y<++x; printf("\n%d %d %d ",x,y,z); return 0; a) ) int main() int x=25,y=10,z=10; x=y==z; printf("\n%d %d %d ",x,y,z); return 0; a) b) c) d) Error 57) int main() int x=100; printf("%d",20+ x++); printf("%d",20+ ++x);

19 return 0; a) b) c) ) int main() int a=7,b=12,c=13,i; i=a b&c; printf("%d\n",i); return 0; a)13 b)15 c)garbage 59) void main() int a=5,b=3; b=++a + a b; b=--b + --a *b++; printf("%d %d",a,b); a)6 79 b)6 92 c)7 90

d)only getch() 9)conio.h has declaration of a)getch() and clrscr() b)printf() and scanf() c)scanf() and getch() d)only getch()

d)only getch() 9)conio.h has declaration of a)getch() and clrscr() b)printf() and scanf() c)scanf() and getch() d)only getch() Practice Problems-2 Prepared by:dilip Kumar Gangwar(Faculty,CS/IT DEPTT GEHU) 1)C Language is developed by- 1.Bjarne stroutstrup 2.Dennis Ritchie 3.R.Byrant 4.None of the above 2)C is a a)middle level