Find the output for the following C program
fn f(x)
{ if(x<=0)
return;
else f(x-1)+x;
}

• Ans-x*(x+1)/2
  
  Lets we take an example x=3
  It goes to else and give. f(2)+3
  f(2)=f(1)+2
  f(1)=f(0)+1
  f(0) goes to if and return 0 bcs here nothing is given....
  So value will be 0+1+2+3=3(3+1)/2=6
• 9 years agoHelpfull: Yes(2) No(0)
• x*(x+1)/2
  sum of n terms
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• here the return type is fn so it may cause a different result like fn(5).
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• how ?? make me understand
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• sum 1+2+upto x
• 7 years agoHelpfull: Yes(0) No(0)