C Programming - Floating Point Issues - Discussion
Discussion Forum : Floating Point Issues - Point Out Errors (Q.No. 1)
1.
Point out the error in the following program.
#include<stdio.h>
int main()
{
struct emp
{
char name[20];
float sal;
};
struct emp e[10];
int i;
for(i=0; i<=9; i++)
scanf("%s %f", e[i].name, &e[i].sal);
return 0;
}
Answer: Option
Explanation:
Compile and Run the above program in Turbo C:
C:\>myprogram.exe Sundar 2555.50 scanf : floating point formats not linked Abnormal program termination
The program terminates abnormally at the time of entering the float value for e[i].sal.
Solution:
Just add the following function in your program. It will force the compiler to include required libraries for handling floating point linkages.
static void force_fpf() /* A dummy function */
{
float x, *y; /* Just declares two variables */
y = &x; /* Forces linkage of FP formats */
x = *y; /* Suppress warning message about x */
}
Discussion:
36 comments Page 2 of 4.
Pessi said:
1 decade ago
Ok if scanf cannot be used in structures then it would give an error related to it but given a linking error right? what does it mean?
Pathmaraj said:
1 decade ago
I don't know how that function include libraries without calling main(). Can you please explain this concept elaborately?
Consfused said:
9 years ago
See this is a real big problem for us. We are stuck here at our lab because of this we need a solution right now.
Santa said:
1 decade ago
In case of e[i].name it is not showing any error then why in the case of &e[i].sal it is shown the error ?
Audiodroid said:
1 decade ago
Sorry, but this compiles and gives no runtime error on linux, compiling with the latest gcc-compiler.
Maha said:
1 decade ago
I can't understand the answer and why it is done like that?
Can anyone explain me please.
Can anyone explain me please.
Madhu said:
1 decade ago
Since there no addressing pointer like '&' in scanf. It generates an error.
Divya said:
8 years ago
While I am using float inside a structure, it is fine working in GCC compiler.
ANIK SINGH said:
1 decade ago
I can't understood what you want to say so please define it briefly.
Mani Tej said:
1 decade ago
Can you explain where we can use pointers and why these are need?
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