28 lines
551 B
C
28 lines
551 B
C
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/*
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Factorial of the number: Factorial of a non-negative integer is the multiplication of all positive integers smaller than or equal to n.
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For example factorial of 6 is 6*5*4*3*2*1 which is 720.
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Input | Output
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5 | 120
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6 | 720
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3 | 6
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Time Complexity - O(log(n))
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Space Complexity- O(1)
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*/
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#include<stdio.h>
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int fact(int n){
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if(n==1){
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return 1;
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}
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else{
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return n*fact(n-1);
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}
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}
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void main(){
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int an;
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printf("Enter a number");
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scanf("%d",&an);
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int f=fact(an);
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printf("factorial of %d is %d",an,f);
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}
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