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Why this piece of code compiles?
#include <iostream>
int foo(int x)
{
if(x == 10)
return x*10;
}
int main()
{
int a;
std::cin>>a;
std::cout<<foo(a)<<'\n';
}
The compiler shouldn't give me an error like "not all code paths returns a value"? What happens/returns my function when x isn't equal to ten?
532
In this example, there are only two branches. The first branch, which selects a loan offer from United Loan, is executed if a case condition containing an XPath Boolean expression is met. Otherwise, the second branch, which selects the Star Loan loan offer, is executed.
A conditional branch instruction is a branch instruction that may or may not generate a transmission of control that relies upon the value of stored bits in the PSR (processor status register). It provides decision-making capabilities in the control unit.
A conditional branch instruction is a branch instruction that may or may not cause a transfer of control depending on the value of stored bits in the PSR (processor status register). Each conditional branch instruction tests a different combination of Status bits for a condition.
Branches are used to transmission control, unconditionally or conditionally, to a stated position of the program. Unconditional branches are continually taken. In contrast, conditional branches contain a condition and thus are either taken or not taken, based on either the particular condition is true or false.
The result is undefined, so the compiler is free to choose -- you probably get what happens to sit at the appropriate stack address where the caller expects the result. Activate compiler warnings, and your compiler will inform you about your omission.
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