42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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uint32_t read_be32(void) {
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uint32_t x = getchar();
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x = (x << 8) | getchar();
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x = (x << 8) | getchar();
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x = (x << 8) | getchar();
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return x;
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}
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int main(void) {
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// Test 0x02:
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putchar(0x02); putchar(0); putchar(0); putchar(0); putchar(46);
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printf("Hello World! Type the following string: 12345\n");
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// Test 0x01:
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putchar(0x01); if(getchar() != 0x1) exit(1);
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uint32_t x = read_be32();
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if(x != 0x0000005) exit(1);
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char buf[5]; fread(buf, 1, 5, stdin);
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if(buf[0] != '1' || buf[1] != '2' || buf[2] != '3' || buf[3] != '4' || buf[4] != '5') exit(1);
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// Test 0x03:
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putchar(0x03); putchar(0); putchar(0); putchar(0); putchar(7);
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printf("stderr\n");
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// Test 0x04, 0x05, 0x06:
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putchar(0x04); if (getchar() != 0x4) exit(1);
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int c = getchar();
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putchar(0x05); putchar(c); putchar(0x06); putchar(c);
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// Test 0x07:
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putchar(0x07); putchar(0); putchar(0); putchar(0); putchar(10); if (getchar() != 0x7) exit(1);
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x = read_be32();
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if(x != 0x000000a) exit(1);
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// Parrot it:
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char b2[10]; fread(b2, 1, 10, stdin);
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putchar(0x02); putchar(0); putchar(0); putchar(0); putchar(10);
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fwrite(b2, 1, 10, stdout);
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// Test 0x08:
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}
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