One of the built-in datatypes.
no
No.
Converts a character to integer (if it is a numeric character)
void myfun (int *pi){if (i==NULL) printf ("check failed");}
'int' is one of the built-in data-types, it is meant to hold integer values.
an integer plus and integer will always be an integer. We say integers are closed under addition.
It cannot be done. The basic rules of math. odd integer plus odd integer = even integer. odd integer plus even integer = odd integer. Always. odd integer plus odd integer plus odd integer = odd integer. Always.
That is correct - In c plus plus you cannot assign integer value to enum - You can only assign an enum value to an enum. Even though an enum looks like an integer, it is not. It is an enum, and C++ implements strict type checking to reduce the probability of bad programming practices. enum ColorCode {black, brown, red, orange, yellow, green, blue, violet, grey, white}; ColorCode myColorCode; myColorCode = yellow; Even though yellow has an integer value of 4, you cannot say myColorCode = 4.
2
If A and B are multiples of C, then A + B is also a multiple of C: If A is a multiple of C then A = mC for some integer m If B is a multiple of C, then B = nC for some integer n → A + B = mC + nC = (m + n)C = kC where k = m + n and is an integer → A + B is a multiple of C
zero?
the size of an integer is determaind by using the function "sizeof(c)",here 'c' is any integer.