Programming Questions

• How would you find the length of each string in the following Program? main() { char *str[] = { "Frogs", "Do", "Not" , "Die" , "They" , "Croak!"}; printf ("%d%d", sizeof (str), sizeof (str[0])); }
• Point out the error, if any, in the following program. #include "stdio.h" main() { unsigned char; FILE *fp; fp = fopen ("trail", "r"); while (( ch = getc (fp)) ! = EOF) printf ("%c", ch); fclose (fp); }
• Point out the error, if any, in the following program. #include "stdarg.h" main() { display ( 4, 12.5, 13.5, 14.5, 44.3); } display(int num, ...) { float c; int j; va_list ptr; va_start (ptr, num); for ( j = 1; j <= num; j++) { c = va_arg ( ptr, float ); printf ("\n%f", c); } }
• What would be the output of the following program? main() { char huge * near * far *ptr1; char near * far * huge *ptr2; char far * huge * near *ptr3; printf ("%d%d%d", sizeof (ptr1), sizeof (ptr2), sizeof (ptr3)); }
• How would you use the function memmove()?
• What will be output of following program ? #include int main() { int a = 10; void *p = &a; int *ptr = p; printf("%u",*ptr); return 0; }
• What will output when you compile and run the following code? #include struct student { int roll; int cgpa; int sgpa[8]; }; void main() { struct student s = { 12,8,7,2,5,9 }; int *ptr; ptr = (int *)&s; clrscr(); printf( "%d", *(ptr+3) ); getch(); }
• C program to find whether a number is palindrome or not.
• Write a c program to find out sum of diagonal element of a matrix.
• The output of the code below is #include void main() { int i = 0, k; if ( i == 0 ) goto label; for ( k = 0;k < 3; k++ ) { printf( "hin" ); label: k = printf( "%03d", i ); } }
• Can you suggest any other way of writing the following expression such that 30 is used only once? a <= 20 ? b = 30 : c = 30 ;
• What would be the output of the following program? main() { int i = -3, j =2, k =0, m ; m = ++j && ++i || ++k ; Printf ( "\n%d%d%d%d", i , j , k , m ); }
• We want to round off x, a Float to an Int value. The correct way to do so would be
• What would be the output of the following program? # define SQR(x) (x * x) main() { int a, b = 3; a = SQR ( b + 2 ); Printf ("\n %d ", a ); }
• What is Autosys?
• Two main measures for the efficiency of an algorithm are
• What is math.floor(3.6)?
• What is the output of this C code? #include void main() { int x = 97; char y = x; printf("%cn", y); }
• Which of the following is true?
• Methods declared as what cannot be overriden?