how to swap 4 number without using temporary number?

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What is a #include preprocessor?

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What is diffrance between declaration and defination of a variable or function

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What is the use of ?

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write the output of following code .. main() { static int a[]={10,20,30,40,50}; int *ptr=a; static int arr[2][2]={1,2,3,4}; char str[]="ABCD * 4#"; char *s=str+2; int i,j; for(i=0;i<5,i++) printf("%d",*ptr++); for(i=0;i<2;i++) for(j=0;j<2;j++) printf("%d\n",*(*(n+i)+j)); printf("%c\n%c\n%c\n",*(str+2),*s++,*--s); }

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A banker has a seif with a cipher. Not to forget the cipher, he wants to write it coded as following: each digit to be replaced with the difference of 9 with the current digit. The banker chose a cipher. Decipher it knowing the cipher starts with a digit different than 9. I need to write a program that takes the cipher from the keyboard and prints the new cipher. I thought of the following: Take the input from the keyboard and put it into a string or an array. Go through the object with a for and for each digit other than the first, substract it from 9 and add it to another variable. Print the new variable. Theoretically I thought of it but I don't know much C. Could you give me any kind of hint, whether I am on the right track or not?

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When should the register modifier be used? Does it really help?

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Find the O/p of the following struct node { char *name; int num; }; int main() { struct node s1={"Harry",1331}; struct node s2=s1; if(s1==s2) printf("Same"); else printf("Diff"); }

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12345 1234 123 12 1

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I have an array of 100 elements, each of which is a random integer. I want to know which of the elements: a) are multiples of 2 b) are multiples of 2 AND 5 c) have a remainder of 3 when divided by 7

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write a c program to print "Welcome" without using semicolon in the whole program ??

15 Answers   Infosys, TCS,

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Write a programe print the sum of series 0,1,2,.....10

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