Anonymous asked 3 years ago
# Implement a function in C++ to compute factorial of a integer number.
* The function should return -1 for negative numbers.
* Factorial of a number if a positive number.
* Do not add any additional prints in the code
# Sample input:
4
1
2
-1
0
# Explaination:
* First line is the number of inputs.
* Next lines are the integers to which the factorial needs to be found
# Sample output:
1
2
-1
1
# Explaination:
* Factorial of 1 is 1
* Factorial of 2 is 4
* Factorial of -1 is -1
* Factorial of 0 is 1
Anonymous answered 3 years ago
Here is the code:
#include<iostream>
using namespace std;
int main(){
int n,i;
cin>>n;
int arr[n];
for(i=0;i<n;i++){
cin>>arr[i];
}
for(i=0;i<n;i++){
if(arr[i]<0){
arr[i]=-1;
}
else if (arr[i]==0)
{
arr[i]=1;
}
else
{
int f=1,j;
for(j=1;j<=arr[i];j++){
f*=j;
}
arr[i]=f;
}
}
for(i=0;i<n;i++){
cout<<arr[i]<<endl;
}
return 0;
}