CodePudding user response:

 # include & lt; Stdio. H> 
# include & lt; Math. H> 

Double func (void); 

Int main (void) 
{
Printf (" % lf \ n ", func ()); 
return 0; 
} 


Double func (void) 
{
Double sum=1.0, temp=1.0; 
Int I=1, the TAB=1; 

While (fabs (temp) & gt; 1-5) e {
Temp=TAB * 1.0/(2 * I + 1); 
i++; 
TAB=TAB * (1); 
Sum=sum + temp; 
} 

Return the sum * 4; 
}