The most simple possible program printing itself on windows :
main()
{
char path[255];
sprintf(path,"cmd.exe /c type \"%s\"",__FILE__);
system(path);
}
on Unix you just use "cat" instead of "type" and necessary
fun to call bash command from c program.
This can be achieved by file handling,
If r is the name of this file;The following codewil print
this prg.
#include<stdio.h>
void main()
{
FILE *fp;
char ch;
clrscr();
fp=fopen("file.c","r");
ch=getc(fp);
while(ch!=EOF)
{
putchar(ch);
ch=getc(fp);
}
getch();
}
34.what are bitwise shift operators?
35.what are bit fields? What is the use of bit fields in a
structure declaration?
36.what is the size of an integer variable?
37.what are the files which are automatically opened when a
c file is executed?
38.what is the little endian and big endian?
39.what is the use of fflush() function?
40.what is the difference between exit() and _exit() functions?
41.where does malloc() function get the memory?
42.what is the difference between malloc() and calloc()
function?
43.what is the difference between postfix and prefix unary
increment operators?
Study the Following Points:
a.One Cannot Take the address of a Bit Field
b.bit fields cannot be arrayed
c.Bit-Fields are machine Dependant
d.Bit-fields cannot be declared as static
1. Which of the Following Statements are true w.r.t Bit-
Fields
A)a,b&c B)Only a & b C)Only c D)All
Look at the Code:
main()
{
int a[]={1,2,3},i;
for(i=0;i<3;i++)
{
printf("%d",*a);
a++;
}
}
Which Statement is/are True w.r.t the above code?
I.Executes Successfully & Prints the contents of the array
II.Gives the Error:Lvalue Required
III.The address of the array should not be changed
IV.None of the Above.
A)Only I B)Only II C)II & III D)IV
What will be printed as the result of the operation below:
#include<..>
int x;
int modifyvalue()
{
return(x+=10);
}
int changevalue(int x)
{
return(x+=1);
}
void main()
{
int x=10;
x++;
changevalue(x);
x++;
modifyvalue();
printf("First output:%d\n",x);
x++;
changevalue(x);
printf("Second output:%d\n",x);
modifyvalue();
printf("Third output:%d\n",x);
}