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 1 of 4.
Naveen said:
1 decade ago
can u pls explain it elaborately ???
Manohar said:
1 decade ago
Can scanf() be used to read values for multiple variables ?
Ashok said:
1 decade ago
Ya scanf read the value.
Badhri said:
1 decade ago
@naveen : use a dummy variable initially to get input. Then substitute it to the structure float variable.
Program :
#include<stdio.h>
int main()
{
struct emp
{
char name[20];
float sal;
};
struct emp e[10];
int i;
float dummy;
for(i=0; i<=9; i++)
scanf("%f",&dummy);
e[i].sal = dummy;
scanf("%s", e[i].name);
return 0;
}
Program :
#include<stdio.h>
int main()
{
struct emp
{
char name[20];
float sal;
};
struct emp e[10];
int i;
float dummy;
for(i=0; i<=9; i++)
scanf("%f",&dummy);
e[i].sal = dummy;
scanf("%s", e[i].name);
return 0;
}
Audiodroid said:
1 decade ago
Sorry, but this compiles and gives no runtime error on linux, compiling with the latest gcc-compiler.
Ajeet said:
1 decade ago
Try including <float.h>
ANIK SINGH said:
1 decade ago
I can't understood what you want to say so please define it briefly.
Sri said:
1 decade ago
Is it Impossible to use scanf in structrues with array ?
Jay said:
1 decade ago
Can you tell me what is floating point format linking?
Pawan Agnihotri said:
1 decade ago
Can you tell me what is floating point format linking?
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