50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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// initialize the tape with 30,000 zeroes
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unsigned char tape[30000] = {0};
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// set the pointer to point at the left-most cell of the tape
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unsigned char* ptr = tape;
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void interpret(char* input) {
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char current_char;
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size_t i;
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size_t loop;
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for (i = 0; input[i] != 0; i++) {
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current_char = input[i];
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if (current_char == '>') {
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++ptr;
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} else if (current_char == '<') {
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--ptr;
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} else if (current_char == '+') {
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++*ptr;
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} else if (current_char == '-') {
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--*ptr;
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} else if (current_char == '.' ) {
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putchar(*ptr);
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} else if (current_char == ',') {
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*ptr = getchar();
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} else if (current_char == '[') {
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continue;
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} else if (current_char == ']' && *ptr) {
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loop = 1;
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while (loop > 0) {
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current_char = input[--i];
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if (current_char == '[') {
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loop--;
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} else if (current_char == ']') {
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loop++;
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}
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}
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}
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}
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}
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int main() {
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interpret(",[.[-],]"); // outputs input
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return 0;
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} |