C Programming - Pointers
Exercise : Pointers - True / False Questions
1.
Are the expression *ptr++ and ++*ptr are same?
Answer: Option
Explanation:
*ptr++ increments the pointer and not the value, whereas the ++*ptr increments the value being pointed by ptr
2.
Will the program compile?
#include<stdio.h>
int main()
{
char str[5] = "IndiaBIX";
return 0;
}
Answer: Option
Explanation:
C doesn't do array bounds checking at compile time, hence this compiles.
But, the modern compilers like Turbo C++ detects this as 'Error: Too many initializers'.
GCC would give you a warning.
3.
The following program reports an error on compilation.
#include<stdio.h>
int main()
{
float i=10, *j;
void *k;
k=&i;
j=k;
printf("%f\n", *j);
return 0;
}
Answer: Option
Explanation:
This program will NOT report any error. (Tested in Turbo C under DOS and GCC under Linux)
The output: 10.000000
The output: 10.000000
4.
Are the three declarations char **apple, char *apple[], and char apple[][] same?
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