C Programming - Floating Point Issues - Discussion
Discussion Forum : Floating Point Issues - Find Output of Program (Q.No. 1)
1.
What will be the output of the program?
#include<stdio.h>
int main()
{
float a=0.7;
if(a < 0.7)
printf("C\n");
else
printf("C++\n");
return 0;
}
Answer: Option
Explanation:
if(a < 0.7) here a is a float variable and 0.7 is a double constant. The float variable a is less than double constant 0.7. Hence the if condition is satisfied and it prints 'C'
Example:
#include<stdio.h>
int main()
{
float a=0.7;
printf("%.10f %.10f\n",0.7, a);
return 0;
}
Output:
0.7000000000 0.6999999881
Discussion:
21 comments Page 2 of 3.
Raghav Naganathan said:
1 decade ago
Guys...if the condition if(a < 0.7f) is used, then the output is c++, as 0.7f is a float constant and 0.7 is not less than 0.7 (as it is equal).
Hope this helps.
Hope this helps.
Suvadeep said:
1 decade ago
@Mahesh.
0.7f implies that 0.7 is a float constant and %.10f is the format specifier for printing a floating point number correct upto 10 decimal places.
0.7f implies that 0.7 is a float constant and %.10f is the format specifier for printing a floating point number correct upto 10 decimal places.
Venkataramana said:
1 decade ago
Please anyone give me clear clarification. Above all are given different solutions but which one is believable? Please tell me.
Potnuru said:
1 decade ago
Why does the float constant has 0.69999991 and why not 0.700000000 only? some one explain.
Kedar said:
1 decade ago
Ya i agree with nive, initialise a=0.1 and check if a < 0.1
it prints C++ !!
it prints C++ !!
Sankari said:
1 decade ago
Hey I'll search it. But I don't know how it prints C++. Please anyone explain?
Satyam kush said:
5 years ago
Hey guys.
Float a = 0.7d;
If(a<0.7)
Now it will give output C.
Float a = 0.7d;
If(a<0.7)
Now it will give output C.
John said:
1 decade ago
Im not able to get it can someone give me a clear explanation.
Mahesh said:
1 decade ago
What does 0.7f and %.10f both implies? anyone please.
Krishna said:
1 decade ago
Why there float a=0.7 ----> (double constant, 0.7)
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