Technical - C Section

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Tanya:
Technical - C Section



1.while((*p++=*q++)!=0){}
is equal to
 

2.the function strcmp(str1,str2) returns


3. int *x(); means


4.#define PRINT(int) printf("int=%d",int);
main()
{
int x,y,z;
x=03;y=-1;z=01;
PRINT(x^x);
z<<=3;PRINT(x);
y>>=3;PRINT(y);
}


5. struct list{
int x;
struct list *next;
}*head;
the struct head.x =100
above is correct / wrong


6. '-'=45 '/'=47
printfr(%d/n,'-','-','-','-','/','/','/');
o/p =?
12.o/p=?
int i;
i=1;
i=i+2*i++;
printf(%d,i);


8.{ ch='A';
while(ch<='F'){
switch(ch){
case'A':case'B':case'C':case'D':ch++;continue;
case'E':case'F':ch++;
}
putchar(ch);
}
}

 a. ABCDEF    b. EFG      c. FG     d. error


9. FILE *fp1,*fp2;
fp1=fopen("one","w")
fp2=fopen("one","w")
fputc('A',fp1)
fputc('B',fp2)
fclose(fp1)
fclose(fp2)}
 

10. int a=1; b=2; c=3; *pointer;
pointer=&c;
a=c/*pointer;
b=c;
printf("a=%d b=%d",a,b);
a. a=1 b=3
b a=3 b=3
c 3 2
d. error


11.#include<malloc.h>
char *f()
{
char *s=malloc(8);
strcpy(s,"goodbye")
}
main()
{
char *f()_;
printf("%c",*f()='A');
}
o/p=?


13. int sum(n)
int n;
if(n<1)return n;
else return(n+sum(n-1))
a 10 b 16 c 14 d 15


14. when a function is recursively called all ,
automatic variables are a. stored in stack b . c. d


15) #define MAN(x,y) (x)>(y)?(x):(y)
{ int i=10;j=5;k=0;
k= MAN(i++,++j)
printf(%d %d %d %d,i,j,k)
}


16) a=10;b=5; c=3;d=3;
if(a<b)&&(c=d++)
printf(%d %d %d %d a,b,c,d)
else printf("%d %d %d %d a,b,c,d);

17. what is o/p
#include<stdarg.h>
show(int t,va_list ptr1)
{
int a,x,i;
a=va_arg(ptr1,int)
printf("n %d",a)
}
display(char)
{int x;
listptr;
va_star(otr,s);
n=va_arg(ptr,int);
show(x,ptr);
}
main()
{
display("hello",4,12,13,14,44);
}
a) 13 b) 12 c) 44 d) 14


18. if the following program (my prog)
main(int size of ,char *arg)
{ while(size of arg) printf("%s",arg[--size of arg)
}
is run from the command line as myprog jan feb mar apr
what would be the o/p
a)myprog jan,feb,mar,apr
b)rev
c)jan,feb,mar,apr
d)error


19.what is o/p
main()
{int i=3;
while(i--)
{
int i=100
i--;
printf("%d..",i);
}
}
a) infinite loop
b) error
c) 99..99..99..99
d) 3..22..1..
 

20)what is the o/p of the program
main()
{
int rows=3,colums=4;
int a[rows][colums]={1,2,3,4,5,6,7,8,9,10,11,12};
i=j=k=99;
for(i=0;i<rows;i++)
for(j=0;j<colums;j++)
if(a[k][j]<k) k=a[j];

printf("%dn",k);

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