How can I display this in a c program?

Question

"the anwer is" then the value of the variable, c, with it.

Answer 1

printf("the answer is %d\n", c);

Answer 2

printf("The answer is %d",c) if c is integer variable
else replace %d by %f if c is floating point variable or %c if c is a character or %s if c is an array of characters (string)

Answer 3

printf("the answer is %d",c);