This is my code

# include & lt; Stdio. H>
# include & lt; Math. H>
Int main ()
{
Double eps, I=1, sum=0;
Int flag=1;
Lf the scanf (" % ", & amp; Eps);
Do
{
The sum +=I;
Flag=- flag;
I=flag/(I + 3);
} while (fabs (I) & gt; Eps);
Printf (" sum=%. 6 lf ", sum);

return 0;
}

CodePudding user response:

Fyi:

 # include & lt; Stdio. H> 
# include & lt; Math. H> 
Int main () 
{
Double t, eps, I=1, sum=1; 
Int flag=1; 
Lf the scanf (" % ", & amp; Eps); 
Do 
{
I=I + 3; 
Flag=- flag; 
T=1.0 * flag/I; 
Sum=sum + t; 

} while (fabs (t) & gt; Eps); 
Printf (" sum=%. 6 lf ", sum); 

return 0; 
} 

CodePudding user response:

 flag * 1.0/(I + 3) 

Ensure that the operation is floating point calculations, do not add the operation according to integer division, get the integer value