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@Cilyan Cilyan/robot.c
Created Mar 31, 2015

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Strange nested construct of structures
#include <stdio.h>
#include <string.h>
/* gcc -Wall -Werror -std=c11 -pedantic -o robotc robot.c */
struct Robot_st {
int pos_x;
int pos_y;
struct BatteryStatus_st {
int capacity;
int load;
} battery;
};
int main(int argc, char **argv)
{
struct Robot_st my_robot = {2, 3, {200, 50}};
struct BatteryStatus_st battery_snapshot;
memcpy(
&battery_snapshot,
&my_robot.battery,
sizeof(struct BatteryStatus_st)
);
printf("robot position: %d,%d\n", my_robot.pos_x, my_robot.pos_y);
printf("battery load: %d%%\n", battery_snapshot.load);
return 0;
}
#include <stdio.h>
#include <string.h>
/* g++ -Wall -Werror -std=c++11 -pedantic -o robotcpp robot.cpp */
struct Robot_st {
int pos_x;
int pos_y;
struct BatteryStatus_st {
int capacity;
int load;
} battery;
};
int main(int argc, char **argv)
{
struct Robot_st my_robot = {2, 3, {200, 50}};
struct Robot_st::BatteryStatus_st battery_snapshot;
memcpy(
&battery_snapshot,
&my_robot.battery,
sizeof(struct Robot_st::BatteryStatus_st)
);
printf("robot position: %d,%d\n", my_robot.pos_x, my_robot.pos_y);
printf("battery load: %d%%\n", my_robot.battery.load);
return 0;
}
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