Explanation: The standard library for input/output is included.
Iteration is denoted by i, and user input by n. initialized to one for the factorial.
The user is asked to provide a number, which we then read.
Each time we multiply the factorial by i in a loop from 1 to n.
The computed factorial is printed following the loop.
#include <stdio.h>
int main() {
int n, i;
unsigned long long factorial = 1; // Use a larger type to handle big results.
printf("Enter a number: ");
scanf("%d", &n);
for (i = 1; i <= n; i++) {
factorial *= i; // Multiply the current factorial by i.
}
printf("Factorial of %d is: %llu\n", n, factorial); // Print the result.
return 0;
}
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