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In the following code; #include<stdio.h> main() { FILE *fp; fp= fopen("trial","r"); } fp points to: a) The first character in the file. b) A structure which contains a "char" pointer which points to the first character in the file. c) The name of the file. d) None of the above.
shrutimitra
- Oct 23rd, 2005
B) A structure which contains a "char" pointer which points to the first character in the file.
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If the following program (myprog) is run from the command line as myprog monday tuesday wednesday thursday, What would be the output? main(int argc, char *argv[]) { while(--argc >0) printf("%s",*++argv); } a) myprog monday tuesday wednesday thursday b) monday tuesday wednesday thursday c) myprog tuesday thursday d) None of the above
shrutimitra
- Oct 23rd, 2005
B) monday tuesday wednesday thursday. Because in while loop we have (--argc) which will ensure that the loop will run for 4 times. if we want to print value of (*++argv) ,it will skip the first value of argv array.
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Point out the error in the following program main() { const int x; x=128; printf("%d",x); }
x should have been initialized where it is declared.
shrutimitra
- Oct 23rd, 2005
We can not assign a value to a const variables. we can only initialize it while creating or declearing the variable.
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Point out the error in the following program main() { int a=10; void f(); a=f(); printf("n%d",a); } void f() { printf("nHi"); }
The program is trying to collect the value of a "void" function into an integer variable.
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else
printf("I hate U");
}
">Iii) main(){ float me = 1.1; double you = 1.1; if(me==you)printf("I love U");else printf("I hate U");}
I hate UExplanation:For floating point numbers (float, double, long double) the values cannot be predicted exactly. Depending on the number of bytes, the precession with of the value represented varies. Float takes 4 bytes and long double takes 10 bytes. So float stores 0.9 with less precision than long double.Rule of Thumb: Never compare or at-least be cautious when using floating point numbers with...
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}
">X) main(){ printf("%x",-1
fff0Explanation :-1 is internally represented as all 1's. When left shifted four times the least significant 4 bits are filled with 0's.The %x format specifier specifies that the integer value be printed as a hexadecimal value
xeejam
- Nov 11th, 2005
Depending on the machine implementation it will result in FFFFFF0 (for 32bit ) or FFF0 (16 bit )
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}
}
">Main(){ int i; clrscr(); for(i=0;i
A) 1, 2, 4, 8, 16B) 0, 1, 2, 4, 8C) 0, 1, 2, 3, 4D) 5, 4, 3, 2, 1Explanation: L does't make any diff.
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> (i - (i -1)));
}
}
">Main(){ signed int bit=512, i=5; for(;i;i--) { printf("%dn", bit >> (i - (i -1))); }}
A) 512, 512, 512, 512, 512B) 256, 256, 0, 0, 0C) 512, 256, 0, 0, 0D) 256, 256, 256, 256, 256Explanation: bit's value is not changed
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How argc and argv works in the following main function?main(int argc,char *argv[]) { int n,i=0; while(argv[1][i]!=\'\\0\') { n=fun(); i++;} printf(\
mpanigrahi
- Mar 22nd, 2006
*****main can recieve its own arguments but in a preconditioned way: main (int argc, char **argv) { ............ }*****% a.out 1 my_input argc is 3 argv[0] = "a.out" argv[1]="1" argv[2]="my_input"
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What is Static function in C?and what is the use of it
vipin gupta
- Oct 20th, 2006
The question is already posted on the list..... A lot of answers are also available.... u should see the previous answers before posting a new problem.....
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How to write a program which prints its own source code as output?
_jawahir_
- Jun 17th, 2011
//***************jawahir007***************//#include<stdio.h>#include<conio.h>void main(int argc, char *argv[]){ char ch,*f,i; FILE *fp; clrscr(); for(i=0;argv[0][i]!='...
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C Code to print number in reverse
Write a program to print the given number in reverse order for e.g 123 as 321
Padma Sirisha
- Jul 13th, 2011
Here is the code
Code- #include<stdio.h>
- "enter the u want number");
- scanf("%d""the reverse number is;%d",reverseno);
- }
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Global variables in c program
If i initialize a global array locally in main function i can still access those elements in other functions as if the elements of array were global whereas this is not the case if i do the same with other basic variables like int i.can someone explain?
anjali_taneja
- Jul 6th, 2011
Global variables are stored in Heap.They have global access anywhere in the program.But local variable get priority over global variable.
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Calculate the weighted average of a list of n numbers
Calculate the weighted average of a list of n numbers using the formula
xavg = f1x1+f2x2+ ….+ fnxn
where the f’s are fractional weighting factors, i.e.,
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