ACE Progamming in C

Question

#include<stdio.h>
void main()
    {
    int i;
    printf("%d", scanf("%d",&i));
    //provide input as 100;
    }

 

Answer 1

scanf returns how many inputs you provided

you are providing one input ===> printf prints 1 as output

 

if your statement is like this printf("%d", scanf("%d %d",&i,&j)); ===> o/p is 2

Comments

here, i'm getting runtime error https://ideone.com/jTdd8F

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problem with your code is return type of main

 

return type of main is should be int, why because after successful run of main function it returns the return value 1 to OS, then only OS says that program successfully executed, if os doesn't get value 1 from main, OS says it's an error.

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yes & also i was not providing input.

this -> https://ideone.com/wTaWnl is working fine!

thanks @ Shaik