Calculating the average of strings

[youngldoe]

So I'm practicing for a test that is coming up, and I'm stumped on one of my questions. This is a two part question, I'll include both questions first.

1) Create a function that takes in an array of strings and returns a double. This double will represent the average length of all the strings.

2) Create a MAIN function that asks the user for 10 strings. Once the array is filled, call the function from Question 1 to calculate the average length of the strings and output the result to the console.

Here is my code so far:

void avg(std::string averages[], int size) {

double sum = 0;

for(int index = 0; index < size; index++) {

sum += averages[index]; // Error here, invalid operands to binary expression?

}

double retVal = sum / size;
return retVal; //**I am getting an error here: void function avg should not return a value
}

int main() {

std:: string myArray[10];
std:: cout << "Please enter 10 strings...";

for(int i = 0; i < 10; i++) {
std::cin >>myArray[i];

}
}

[integralfx]

Please use code tags. http://www.cplusplus.com/articles/jEywvCM9/

returns a double

void avg(std::string averages[], int size)

the average length of all the strings

sum += averages[index]; // Error here, invalid operands to binary expression?
You're trying to add a double and a std::string together.

[whitenite1]

@youngldoe

A void function CANNOT return anything. Change void to double. And,hopefully, somewhere you'll say that the variable, size, is equal to 10, or whatever the size of your myArray[], ends up being, otherwise, you'll have another error. When you initialized sum in the function, don't set it as an int, but the double. double sum = 0.0;