C Programming Test

C99 standard guarantees uniqueness of ____ characters for internal names.

C99 standard guarantess uniqueness of _____ characters for external names.

Which of the following is not a valid variable name declaration?

Which of the following is not a valid variable name declaration?

Variable names beginning with underscore is not encouraged. Why?

All keywords in C are in

Variable name resolving (number of significant characters for uniqueness of variable) depends on

Which of the following is true for variable names in C?

What will the following code do?

int main(int argc, char** argv){
char* ptr = NULL;
free(ptr);
return 0;
}

Which of the following differences between malloc() and calloc() are true?

1. 1) malloc() allocates number of bytes passed as argument
2. 2) calloc() allocates the product of number of elementsbbmultiplied by the size of each element,which are both passed as arguments.
3. 3) Both malloc() and calloc() return void*
4. 4) Both malloc() and calloc() initialize allocated memory to all 0

In general which of the following functions should be faster for sending information to a file?

How many bytes of memory are used to store a long long data type?

For the code below which lines should be reported as errors by a compiler?
int main(int argc, char** argv)
{
const char* foo = “wow”; // line 1
foo = “top”; // line 2
foo[0] = 1; // line 3

return 0;
}

What value gets printed by the program below?

What value gets printed by the program below?