How should I take input in problems like these?

Can anyone please help me in understanding how to take input in problems like these which do not specify the number of test cases?

int n;

while(cin>>n)

{

//your logic

}

2 Likes

You can simply use:

while(scanf("%d", &n) == 1)

{

//Do Something

}

1 Like

You can use a custom input method and check for EOF that is End Of File.

int input()
{

char c;
int flag=0;
c=getchar();
    if(c==EOF)
    return -1;
while(c!='\0')//stop input when null character is encountered meaning a number has ended
{
       //dow what you want
       //save the data or operate on data
   c=getchar();
}
//here return the data acquired
return 0;

}

This will take input character by character . It is upto you how to use those characters . You can transform it into a number or store it as a string and much much more . In the loop in main you can check for if the input () function return -1 to stop executing the program.

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