Replace any alphabetic character with '_' in 2-character string passCode. Ex: If passCode is "9a", output is: 9_
Hint: Use two if statements to check each of the two characters in the string, using isalpha().
```
#include
#include
#include

int main(void) {
char passCode[3];

scanf("%s", passCode);

/* Your solution goes here */

printf("%s\n", passCode);
return 0;
}
```

Linux is distributed under gnu gpl. why is this important? a. it ensures that only torvalds can profit from the sale of linux b. it prevents unknowledgeable users from downloading programs they don't know how to operate. c. it provides protection for the developers who created linux. d. it states that anyone can copy, modify, and share the program if changes are made public.

You are working with a professional edition organization. they wish to install the expense tracker which requires the use of 4 custom tabs, 3 custom objects, and one custom app. if the company is already using 4 applications, 36 custom objects, and 7 custom tabs, what will happen when they try to install expense tracker?

Suppose an astronomer discovers a large, spherical-shaped body orbiting the sun. the body is composed mostly of rock, and there are no other bodies sharing its orbit. what is the best way to categorize this body? a. planet b. moon c. comet d. asteroid