SCR

TP4/Ex1:/filexec.c

@@ -0,0 +1,18 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int main(int argc, char* argv[]){
+	for(int i=3;i<argc;i++){
+		wait(NULL);
+		pid_t p = fork();
+		if(p==0){
+			execl(argv[1],argv[1],argv[2],argv[i],NULL);
+			assert(0);
+		}
+	}
+	return EXIT_SUCCESS;
+}

TP4/Ex1:/parexec.c

@@ -0,0 +1,18 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+int main(int argc, char* argv[]){
+	for(int i=2;i<argc;i++){
+		wait(NULL);
+		pid_t p = fork();
+		if(p==0){
+			execl(argv[1],argv[1],argv[i],NULL);
+			assert(0);
+		}
+	}
+	return EXIT_SUCCESS;
+}

TP4/Ex1:/rebours.c

@@ -0,0 +1,19 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int main(int argc, char* argv[])
+{
+	assert(argc == 2);
+
+	int value = strtol(argv[1], NULL, 0);
+	pid_t p =  getpid();
+	printf("%d: debut\n",p);
+	for(int i = value; i>0; i--){
+		printf("%d: %d\n",p,i);
+		sleep(1);
+	}
+	printf("%d: fin\n",p);
+	return EXIT_SUCCESS;
+}

TP4/Ex2/pi.c

@@ -0,0 +1,31 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <signal.h>
+
+uint64_t shots_in=0,shots=0;
+double x,y;
+
+void signalrm_handler(int n){
+    
+}
+
+int main(int argc, char **argv)
+{
+	shots_in = 0;
+	shots = 0;
+	for (;;){
+		x = rand()/(RAND_MAX*1.0);
+		y = rand()/(RAND_MAX*1.0);
+		shots ++;
+		if ((x*x+y*y)<=1){
+			shots_in ++;
+		}    
+	}
+	/* la probabilité vaut tirsIn/tirs, 
+	   Elle converge lentement vers pi/4*/	
+}