toupper is used to change the case of given character to upper case
There are no commands in C-programming, you should use function sqrt from math.h
Sizeof is an example.
No.
with toupper and tolower, from ctype.h
In C programming, a precondition is a condition that must be true before a function is called, while a postcondition is a condition that is guaranteed to be true after the function has been executed.
1. identifier 2. short for function
it is sqrt in header math.h
I believe characters have a toUpper() function. For example: char x = 'a'; printf("%c\n", x.toUpper()); // This should print "A" You could also add or subtract using ascii values - remember, a char is pretty much an integer, just displayed differently. For example: printf("Character %c = decimal %d\n", x, x); will display your character and its ascii integer equivalent.
Sequential style, or function-oriented. Which is opposed to object-oriented, as in C++.
its quite simple using printf function
In C-programming: int main (void) { return 0; }
printf, fgets, strlen, malloc etc