Need help with these C++ problems:

Part I:

What is output by the following? Assume the necessary header files are included.

1. int funct_1(int, int);

int main() {

int num1=2, val;

val = funct_1(8, num1) + funct_1(num1, 4);

cout << val;

return 0;

}

int funct_1(int x, int y) {

return x + y;

}

2. void dostuff(int cnt, int extra);

void main(void) {

int a=3, b=2;

dostuff(a, b);

dostuff(2, 4);

}

void dostuff(int cnt, int extra) {

int i;

for(i=0; i<=cnt; i++) {

cout << i + extra << " ";

}

cout << endl;

}

3. int funct_1(int, int);

void main(void) {

int num1=2, val;

val = funct_1(8, funct_1(num1, 5) );

cout << val << endl;

cout << funct_1(val, num1);

}

int funct_1(int x, int y) {

int temp;

temp = x + y + 3;

return temp;

}

4. int dostuff(int cnt);

void main(void) {

int a=3, c;

c = dostuff(a);

cout << c << endl;

cout << dostuff(4);

}

int dostuff(int cnt) {

int i, sum=0;

for(i=0; i<=cnt; i++)

sum += i;

return sum;

}

5. void userInOut(int);

void main(void) {

int cnt=3;

userInOut(cnt);

}

void userInOut(int cnt) {

int num, sum=0;

for(int i=1; i<=cnt; i++) {

cout << "Enter a number: "; // assume user enters 2, 14, -5

cin >> num;

sum += num;

}

cout << "Sum is " << sum;

}

6. float userIn(int);

void main(void) {

int cnt=2;

float avg;

avg = userIn(cnt);

cout << avg;

}

float userIn(int count) {

int num, sum=0;

for(int i=1; i<=count; i++) {

cout << "Enter a number: "; // assume user enters 6, 7

cin >> num;

sum += num;

}

return static_cast (sum) / count;

}

7. int reference(int, int, int &);

void main(void) {

int x=5, y=6, z=3;

x = reference(4, y, z);

cout << x << ", " << y << ", " << z;

}

int reference(int x, int y, int &c) {

c = x + y;

return y;

}

8. void funct_stat(int);

int main(void) {

funct_stat(2);

funct_stat(3);

}

void funct_stat(int x) {

static int num = 2;

num = num + x;

cout << num << ", ";

}