102 lines
2.1 KiB
C
102 lines
2.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int clear_stdin(void)
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{
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char c;
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do
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c = getchar();
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while (c != 10);
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return c;
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}
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int get_unum()
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{
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uint nb;
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fflush(stdout);
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scanf("%u", &nb);
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clear_stdin();
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return nb;
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}
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int store_number(char *data)
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{
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unsigned int number;
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unsigned int index;
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printf(" Number: ");
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number = get_unum();
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printf(" Index: ");
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index = get_unum();
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if (index == 3 * (index / 3) || (number & 0xff00) == 183) {
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puts(" *** ERROR! ***");
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puts(" This index is reserved for wil!");
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puts(" *** ERROR! ***");
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return 1;
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}
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data[4 * index] = number;
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return 0;
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}
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int read_number(char *data)
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{
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int unum;
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printf(" Index: ");
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unum = get_unum();
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printf(" Number at data[%u] is %c\n", unum, data[4 * unum]);
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return 0;
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}
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int main(int argc, const char **argv, const char **envp)
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{
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char data[400]; // 0xffffda74
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int number;
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char s[4];
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int a = 0, b = 0, c = 0, d = 0;
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s[0] = '\0';
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memset(data, 0, sizeof(data));
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while (*argv) {
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memset((void *)*argv, 0, strlen(*argv));
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++argv;
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}
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while (*envp) {
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memset((void *)*envp, 0, strlen(*envp));
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++envp;
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}
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puts("----------------------------------------------------\n"
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" Welcome to wil's crappy number storage service! \n"
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"----------------------------------------------------\n"
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" Commands: \n"
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" store - store a number into the data storage \n"
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" read - read a number from the data storage \n"
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" quit - exit the program \n"
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"----------------------------------------------------\n"
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" wil has reserved some storage :> \n"
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"----------------------------------------------------\n");
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while (1) {
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printf("Input command: ");
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number = 1;
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fgets(s, 20, stdin);
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s[strlen(s) - 1] = '\0';
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if (!memcmp(s, "quit", 4))
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return 0;
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if (!memcmp(s, "store", 5))
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number = store_number(data);
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if (!memcmp(s, "read", 4))
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number = read_number(data);
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if (number)
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printf(" Failed to do %s command\n", s);
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else
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printf(" Completed %s command successfully\n", s);
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s[0] = '\0';
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a = 0;
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b = 0;
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c = 0;
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d = 0;
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}
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}
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