Doubt on working of "return" in functions

#1

in a int function is it cumpolsory to write return statement befor the } . I wrote a code in which return was passed in if statements and it showed error, although the if statemnt was true , so is it mandatory to return at the end every time (unless it is not void() )?

#2

hi @aggarwal.naman21
Kindly share ur code… will check it…
also it might be the case that the if condition u are checking is not getting satisfied, hence if there is no return statement after that, it will give error…

1 Like
#3

#include
#include
using namespace std;

int FINDTHENO( int a[] ,int n, int m){

int i;     
for( i = 0 ; i<n ; i++)
 {
     if(a[i]==m) 
     {
     return i;
	 
     }
 }
 
if(i==n)
{
return -1;
}
  return 0;

}

int main() {

 int n ;
 int a[n];
 cin>>n;

int i = 0 , m;
 

for( i=0; i<n; i++)
 {
     cin>>a[i];
 }
 cin>>m;
cout<<FINDTHENO(a,n,m);

}

in this code without return 0 it was showing error…

#4

hi @aggarwal.naman21

if(i==n)
{
return -1;
}

u don’t have to write this as well… when u come out of for loop simply return -1, as element would not have been found in that case…

1 Like
#5

ahh ok… thank you very much!

1 Like
#6

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