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If the following program (myprog) is run from the command line as myprog 1 2 3, What would be the output? main(int argc, char *argv[]) { int i,j=0; for(i=0;i<argc;i++) j=j+ atoi(argv[i]); printf("%d",j); } a) 1 2 3 b) 6 c) error d) "123"
komaldhote
- May 28th, 2010
Ans is 6.atoi is the function which return the decimal or digits in string.
Tonni
- Apr 7th, 2007
B) 6atoi fails on the first element of argv[], being "command.exe", but atoi returns 0 in case of failure.
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What is the difference between "C structure" and "C++ structure".
prititripathi
- Dec 17th, 2010
C++ also support structure bt with more additional features making it suitable for oop dat feature is class. like in c++ enum defined within class/structure is local to dat class while in c it is globally visible
tanuja
- Nov 30th, 2010
C structure::: 1) //single line comment about the programme. 2) headerfiles 3) macros, typedef... 4) global declarations 5) main() 6) statements C++ Structure::: 1) /*multi line comments*/ ...
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A switch statement cannot includea) constants as arguments b) constant expression as argumentsc) string as an argument d) None of the above
Choose the correct option
Sonali Sadhukhan
- Jun 18th, 2011
I think b is the option because conditions are not checked in switch().
paulson paul chambakottukudyil
- Apr 20th, 2006
C only.
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}
">Main(){ int i = 0xff ; printf("n%d", i
A) 1020B) 512C) 4D) 1024
Sukumar Paul
- Jul 24th, 2010
Here decimal eqivalent of OXFF is 255. Assuming integer is 16 bit, binary representation of OXFF will be: 0000000011111111 Next come to the i<<2, this left shift operator will shift the 2 bits l...
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Point out error, if any, in the following program main() { int i=1; switch(i) { case 1: printf("nRadioactive cats have 18 half-lives"); break; case 1*2+4: printf("nBottle for rent -inquire within"); break; } }
A) No errorB) Runtime errorC)
Sukumar Paul
- Aug 1st, 2010
Yes, the ans is A) i.e. No Error.In switch case we can place any constant (only integer or character not any floating point number). Here 1*2+4 is an expression and the value of the expression is 6 i.e constant which is applicable in switch case.
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Following declarations are different from one anotherconst char *const s; char const *const s;
A) TrueB) False
Sukumar Paul
- Aug 1st, 2010
Yes, there is no difference between two declaration, both are same.1) const char *const s; &nb...
melukotahari
- Mar 12th, 2009
There is no difference between the two.Both are Constant pointer s to a constant characters
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How to find a given number is armstrong number or not in "c".?
jintojos
- Jun 16th, 2008
void main() { int num1,num2,sum=0,rem; printf("Enter The Number :"); scanf("%d",&num1); num2=num1; while(num2>0) { rem=num2%10; sum+=rem*rem*rem; num...
Deepak kumar Prasad
- Aug 7th, 2006
The check should should be while ( n>=1) and not (n>=0)The cotrol enters into an infinite while loop.
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Decrement operator in C
int a=3,y;
y=++a + a+++ --a+ ++a;
printf("%d%d",y,a);
Why value of y become 16. -
Removing duplicate words from a string
cint main()
{
char arr[1000];
char *temp=NULL;
char *temp1=malloc(100);
int len;
printf("enter the string:
");
gets(arr);
len=strlen(arr);
puts(arr);
printf("len:%d
",len);
temp=strtok(arr," ");
if(temp!=NULL)
strcpy(temp1,temp);
while(temp!=NULL)
{
temp=strtok(NULL,"... -
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What is the output of the following program#includevoid main(){printf("%d%d",sizeof('a'),sizeof("a"));
malaram
- Jan 31st, 2007
Output is: 22for sizeof('a') compiler takes the ASCII value of 'a' and ASCII value is integer so answer is 2for sizeof("a") compiler also count NULL() so total characters are 2 hence answer is 2
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++q; }
for(j=0;j<5;j++){
printf(" %d ",*p);
++p; }
}
What is the Output of the above program.">Main(){ int c[ ]={2.8,3.4,4,6.7,5}; int j,*p=c,*q=c; for(j=0;j
vidyadaundkar
- Dec 15th, 2008
Out put is 2 2 2 2 2 2 8 3 4 4 the o/p of first printf statement is 2 2 2 2 2o/p of second printf statement is 2 8 3 4 4
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What is the application of itoa()
kbjarnason
- Jul 2nd, 2010
Since C doesn't define an itoa function, it's application could be anything at all.By contrast, the atoi function is used to convert a string representation of an integer value to an actual in...
shine_babu
- Jul 17th, 2007
Converts an integer value to a null-terminated string using the specified base.If base is 10 and value is negative, the resulting string is preceded with a minus sign (-). With any other base, value is always considered unsigned.
C Interview Questions
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