Which header file are methods(or macros) isalpha(), islower() a part of?

Which one is the correct way of initializing a two-dimensional array?

What will be printed on the standard output as a result of the following code snippet? int funr(int x, int y) { if(x <= 0) { return y; } else { return (1+funr(x-1,y)); } } void main() { printf('%d',funr(2,3)); }

Which file mode would mean read + append?

What will be the output of the following program? #include main() { int n = 5; assert(n > 3); //statement 1 n = n+2; assert(n > 7);//statement 2 return 0; }

What would be printed on the standard output as a result of the following code snippet? main() { int n=5, x; x = n++; printf('%d ', x); x = ++n; printf('%d ', x++); printf('%d', x); return 0; }

What would be printed on the standard output as a result of the following code snippet? main() { char *s='Hello World'; char s1[20], s2[20]; int len = sscanf(s,'%s',s1); printf('%s : %d', s1, len); }

Which is/are the type/s of memory allocation that needs/need the programmer to take care of memory management?

Suppose there is a file a.dat which has to be opened in the read mode using the FILE pointer ptr1, what will be the correct syntax?

Given the following array: char books[][40]={ 'The Little World of Don Camillo', 'To Kill a Mockingbird', 'My Family and Other Animals', 'Birds, Beasts and Relatives' }; what would be the output of printf('%c',books[2][5]);?

Which function will you use to position the file pointer at the beginning of the file?