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| #include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
char name[1024];
void call_me_maybe()
{
system("/bin/sh");
}
void unbuffer_io()
{
setvbuf(stdin, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IONBF, 0);
}
void set_timeout()
{
alarm(120);
}
void ask_name()
{
printf("What's your name? ");
gets(name);
}
void say_goodbye()
{
printf("Goodbye, %s\n", name);
}
void run_program()
{
int arr[10], i, v, act;
for(i = 0; i < 10; i++)
arr[i] = 0;
while(1) {
puts("0 > exit");
puts("1 > edit number");
puts("2 > show number");
puts("3 > sum");
puts("4 > dump all numbers");
printf(" > ");
scanf("%d", &act);
switch(act) {
case 0:
return;
case 1:
printf("Index to edit: ");
scanf("%d", &i);
printf("How many? ");
scanf("%d", &v);
arr[i] = v;
break;
case 2:
printf("Index to show: ");
scanf("%d", &i);
printf("arr[%d] is %d\n", i, arr[i]);
break;
case 3:
v = 0;
for(i = 0; i < 10; i++)
v += arr[i];
printf("Sum is %d\n", v);
break;
case 4:
for(i = 0; i < 10; i++)
printf("arr[%d] is %d\n", i, arr[i]);
break;
}
}
}
int main()
{
set_timeout();
unbuffer_io();
ask_name();
run_program();
say_goodbye();
return 0;
}
|
