Esame soa

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#define N 5
#define T 7

int pidPerConcurente[N];
int giri[N];

int getConcurrentByPid(int pid){
    int i=0;
    while(pidPerConcurente[i] != pid)
        i++;
    return i+1;
}

int main(){
    int i;
    for(i=0; i<N; giri[i] = 0, i++){
        int temp = fork();
        if(!temp)
            execlp("./a", "./a", (char*)0);
        pidPerConcurente[i] = temp;
    }

    int status, finePid, finito=0;

    while(!finito){
        finePid = wait(&status);
        int c = getConcurrentByPid(finePid);
        giri[c-1] ++;
        if(giri[c-1] == T){
            printf("%d ha vinto\n", c);
            finito = 1;
        }else{
            printf("concorrente %d, ha concluso il suo %d giro\n", c, giri[c-1]);
            if(!(finePid = fork()))
                execlp("./a", "./a", (char*)0);

            pidPerConcurente[c-1] = finePid;
        }
    }

    for(i=0; i<N-1; wait(&status), i++);

    return 0;
}