TurboC has many flaws, one of the simplest examples would be
char *p;
scanf("%s", p);
In gcc/g++ this will surely lead to segmentation fault as memory has not
been allocated. Whereas in TC it will execute fine in most of the cases.
Infact this will crash when your code is really large.
As for input, 2 will automatically be treated as 2.0 when scanf demands a
floating value. However, if you enter characters in place of numbers or vice
versa. You may experience weird behavior.
Regards,
Sandeep Jain
On Mon, Jul 11, 2011 at 9:37 AM, nicks <crazy.logic.k...@gmail.com> wrote:
> @sandeep,kamakshii....thanks both...your replies were really helpful....i
> understood my fault in 3,4,5...they are clea now......but i am still stuck
> with problem 1 and 2
>
> @sandeep....what if i am using turbo C...though i am using gcc on terminal
> in my linux system.....
> moreover acc. t K&R "printf uses it's first argument to decide how many
> arguments follow and what their types are. it will get confused,and you will
> get wrong answers,if there are not enough arguments or if they are the wrong
> type"
> it's fine it will give the wrong answer then it's only the value we provide
> in input ???
>
>
> @kamakshii...can explain your point related to macro in detail.....is it
> related to linking or something which is done after creating object file...
>
> On Mon, Jul 11, 2011 at 1:37 AM, Kamakshii Aggarwal <kamakshi...@gmail.com
> > wrote:
>
>> probelm 5:It must be giving runtime error not segmentation fault coz it is
>> an infinite recursion....
>>
>>
>> On Mon, Jul 11, 2011 at 1:09 AM, Kamakshii Aggarwal <
>> kamakshi...@gmail.com> wrote:
>>
>>> for the first question...it will take #ifdef getchar to be '1' only when
>>> it is defined as a MACRO in your program..if u dont define macro it will not
>>> take it into consideration even if it is defined in header file.
>>>
>>> On Mon, Jul 11, 2011 at 12:38 AM, nicks <crazy.logic.k...@gmail.com>wrote:
>>>
>>>> Someone please help me in understanding the following output -
>>>>
>>>> Problem *1>.*
>>>> #include<stdio.h>
>>>> #ifdef getchar //this expression is evaluated to zero.....why is
>>>> so happening ??........getchar is defined as macro in stdio.h.....i mean
>>>> else part shouldn't be executed which is happening
>>>> #undef getchar
>>>> #else
>>>> #define getchar scanf("%c",&ch);
>>>> #endif
>>>> main()
>>>> {
>>>> char ch;
>>>> int c;
>>>> c=getchar;
>>>> printf("%d",c);
>>>> }
>>>>
>>>> *OUTPUT- 1*
>>>> *
>>>> *
>>>> *
>>>> *
>>>> *2>.*
>>>> #include<stdio.h>
>>>> void main()
>>>> {
>>>> long x;
>>>> float t;
>>>> scanf("%f",&t);
>>>> printf("%d\n",t);
>>>> x=90;
>>>> printf("%ld\n",x);
>>>> {
>>>> x=1;
>>>> printf("%f\n",x);
>>>> {
>>>> x=30;
>>>> printf("%f\n",x);
>>>> }
>>>> printf("%f\n",x);
>>>> }
>>>> x==9;
>>>> printf("%f\n",x);
>>>> }
>>>>
>>>> *OUTPUT(INPUT IS 2) -*
>>>> *2*
>>>> *0*
>>>> *90*
>>>> *2.000000*
>>>> *2.000000*
>>>> *2.000000*
>>>> *2.000000*
>>>> *
>>>> *
>>>> In this problem i failed to Understand why t is printed as 0 (though
>>>> float is converted to integer by truncation of the fractional part)
>>>> and how the value of t is transferred to x....looks very strange to me
>>>> !!
>>>>
>>>>
>>>> *3>.*
>>>> #include<stdio.h>
>>>> main()
>>>> {
>>>> printf("\nACM-CIC"+3);
>>>> printf(4+"\nACM-CIC");
>>>>
>>>> }
>>>>
>>>> *OUTPUT -*
>>>> *M-CIC-CIC*
>>>> *
>>>> *
>>>> What does +3 and +4 doing and does it matter to use them before the
>>>> format string or after it ??
>>>>
>>>> *4>.*
>>>> #include<stdio.h>
>>>> main()
>>>> {
>>>> long long i=50;
>>>> i==1000000000000000000000000000000000000000;
>>>> printf("i=%d\n\n%lld",sizeof(i),i);
>>>> //system("pause");
>>>> }
>>>>
>>>> *OUTPUT -*
>>>> *i=8*
>>>> *
>>>> *
>>>> *50*
>>>> *
>>>> *
>>>> Assigning very large value to i isn't changing it's value.....why is so
>>>> happening ??
>>>>
>>>> and the last one
>>>>
>>>> *5>.*
>>>> #include<stdio.h>
>>>> main()
>>>> {
>>>> static int i=0;
>>>> if(i<=-1)
>>>> printf("\nBull's Eye");
>>>> else
>>>> {
>>>> main();
>>>> _exit(1);
>>>> }
>>>> i++;
>>>> }
>>>>
>>>> *OUTPUT -*
>>>> *segementation fault*
>>>> *
>>>> *
>>>> What's Wrong with the above Code due to which it is giving Runtime
>>>> error....plz help me pointing it out !!
>>>>
>>>> --
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>>>>
>>>
>>>
>>>
>>> --
>>> Regards,
>>> Kamakshi
>>> kamakshi...@gmail.com
>>>
>>
>>
>>
>> --
>> Regards,
>> Kamakshi
>> kamakshi...@gmail.com
>>
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>
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