State Machine Using Function Pointers

Code

#include <stdio.h>

void state_init()    { printf("Init"); }
void state_load()    { printf("Load"); }
void state_execute() { printf("Execute"); }
void state_exit()    { printf("Exit"); }

// Your logic here
void run_state_sequence(int start) {
    // Implement using function pointer array
    void (*states[4])()={state_init,state_load,state_execute,state_exit};
    for (int i=0;i<3;i++){
    if (start==3){
        states[3]();
        start=0;
    }
    else{
    states[start]();
    start++;
    }
    printf("\n");
    }

}

int main() {
    int start;
    scanf("%d", &start);
    run_state_sequence(start);
    return 0;
}

Solving Approach

 

 

 

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Input

0

Expected Output

Init Load Execute