Question

Write code to complete RaiseToPower(). Sample output if userBase is 4 and userExponent is 2 is shown below. Note: This example is for practicing recursion; a non-recursive function, or using the built-in function pow(), would be more common.
4^2 = 16
#include
int RaiseToPower(int baseVal, int exponentVal){
int resultVal = 0;
if (exponentVal == 0) {
resultVal = 1;
}
else {
resultVal = baseVal * /* Your solution goes here */;
}
return resultVal;
}
int main(void) {
int userBase = 0;
int userExponent = 0;
userBase = 4;
userExponent = 2;
printf("%d^%d = %d\n", userBase, userExponent, RaiseToPower(userBase, userExponent));
return 0;
}

Answer 1

Answer:

Replace /* Your solution goes here */ with

RaiseToPower(baseVal, exponentVal-1);

Explanation:

From the question, we understand that the program uses recursion.

The essence of recursion is to call a function from the function itself.

This is done by RaiseToPower(baseVal, exponentVal-1);

Because it passed the baseVal and the exponentVal reduced by 1 to the RaiseToPower function.

This is repeated until exponentVal = 1.

However, I've added the full program as an attachment where I used comments to explain some lines.

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