Trying to run multiple loops in C - c

Question

I was tasked with creating a program that uses 4 different loops to print the same thing 4 times (x, x^2, x^3, x!). The issue I am having is that only one loop seems to run at a time. How can i make all loops run so that my output looks like:
0 0 0 1
1 1 1 1
0 0 0 1
1 1 1 1
0 0 0 1
1 1 1 1
0 0 0 1
1 1 1 1
Below is the code that I have written so far but i cannot get all of the loops to run simultaneously. My output will only print to the screen once, instead of printing 4 times. Can someone look over my code and let me know where i went wrong?
#include<stdio.h>
void main()
{
int i =1 ,num;
//Prompt user for an input
printf("Enter a number: ");
scanf( "%d", &num);
if ( num < 0)
printf("Error: Factorial of negative number doesn't exist.");
//Loop 1
for(i = 1; i <= num; i++)
printf("%d %d %d %d \n", i, (i) * (i), (i) * (i) * (i), factorial(i));
//Loop 2
while(i < num) {
printf("%d %d %d %d \n", i, (i) * (i), (i) * (i) * (i), factorial(i));
i++;
//Loop 3
do {
printf("%d %d %d %d \n", i, (i) * (i), (i) * (i) * (i), factorial(i));
i++;
}while( i < num);
}
//Loop 4 without for, while, do while
if ( i <= num)
printf("%d %d %d %d \n", i, (i) * (i), (i) * (i) * (i), factorial(i));
i++;
}
//Function to calculate a factorial
int factorial(int n)
{
int c;
int result = 1;
for (c = 1; c <= n; c++)
result = result * c;
return result;
}
The program is designed to take a number from a user and run 4 different loops with that number (for, while, do-while, and a constructed loop via if statement).

Answer 1

You need to reset your variable "i"
You have int i = 1;
Then after 1st for loop i will not be <= num;
int i = 1;
for loop...//1
i=1;
while loop...//2

Answer 2

Hi your question isn't as clear as we can get it, however you are searching to run loops in parallel way and this is can be done with threads you can check : https://computing.llnl.gov/tutorials/pthreads/ and i did a simple example without thread if this can help you to complete your work:
#include <stdio.h>
int factorial(int n) {
int c;
int result = 1;
for (c = 1; c <= n; c++)
result = result * c;
return result;
}
void forLoop(int num) {
static int i = 1;
int j;
for(j = 0 ; i <= num && j < 2; i++, j++)
printf("%d %d %d %d \n", i, (i) * (i), (i) * (i) * (i), factorial(i));
}
void whileLoop(int num) {
static int i = 1;
int j = 0;
while(i <= num && j < 2) {
printf("%d %d %d %d \n", i, (i) * (i), (i) * (i) * (i), factorial(i));
i++;
j++;
}
}
void doWhileLoop(int num) {
static int i = 1;
int j = 0;
do {
printf("%d %d %d %d \n", i, (i) * (i), (i) * (i) * (i), factorial(i));
i++;
j++;
} while(i <= num && j < 2);
}
void constructedLoop(int num) {
static int i = 1;
int j = 0;
loop:
if(i <= num && j < 2) {
printf("%d %d %d %d \n", i, (i) * (i), (i) * (i) * (i), factorial(i));
i++;
j++;
goto loop;
}
}
int main() {
int i =1 ,num;
//Prompt user for an input
printf("Enter a number: ");
scanf( "%d", &num);
if ( num < 0){
printf("Error: Factorial of negative number doesn't exist.");
return 0;
}
while(i <= num) {
forLoop(num);
whileLoop(num);
doWhileLoop(num);
constructedLoop(num);
i += 2;
}
return 0;
}