Please generate a valid C++ Code that meets the requirements below. The code should contain a main
function. And the main function gives back an output value. Please initialize all the variables you define with a value. Please do not include any undefined behavior in your code.
The C++ code should contain the following pattern:
// no va_arg in stdarg.h is used
// define one function which has variable arguments
static int varargs_func(int x, ...) {
RANDOM_CODE; // Do something here with input arguments, but don't generate the codes contain va_args
int result = x OPERATOR ANY_VALUE; // result is related to x
return result;
}
int main() {
RANDOM_CODE; // declare some variables
int x = ANY_VALUE; // declare variable x
ANY_TYPE y = ANY_VALUE; // declare y
ANY_TYPE z = ANY_VALUE; // declare z
// invoke the func varargs_func
int result = varargs_func(x, y, z, ANY_VALUE, ANY_VALUE); // you can pass the arguments with any number, any type
return result;
}
This pattern characterizes scenarios where within the main
function, there exists a call to varargs_func
, and the result of this call is being used. varargs_func
is marked as variable function, which accepts variable arguments, then returns a single ANY_TYPE
value that is determined by the first argument. The first argument can be any type, e.g. int
, float
, ptr
struct
, and so on. The functions must be static
(which will be translated into ir function with internel attribute), no vastart intrinsic(such as va_arg
in stdarg.h
). The main
function must return a value related to this optimization for further comparison.
#include <vector>
#include <string>
static int varargs_func(int x, ...) {
int result = 10;
if (x % 2) {
result = x * 32 + 15;
} else {
result = x - 15;
}
if (x > 100) {
result = result * 2;
} else {
result = result * 2;
}
return result;
}
int main() {
int result = 0;
int a = (1 << 31);
std::vector<int> vec = {0, 1, 2, 3};
std::string str = "hello";
vec.assign(5, 42);
int b = varargs_func(a, 18, 25, vec[1], 1.000000, str[3]);
result = b;
return result;
}
Please generate a valid C++ Code that meets the requirements below. The code should contain a main
function. And the main function gives back an output value. Please initialize all the variables you define with a value.
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