Data commit

Task/Subleq/C/subleq.c

@@ -0,0 +1,49 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+void
+subleq(int *code)
+{
+	int ip = 0, a, b, c, nextIP;
+	char ch;
+	while(0 <= ip) {
+		nextIP = ip + 3;
+		a = code[ip];
+		b = code[ip + 1];
+		c = code[ip + 2];
+		if(a == -1) {
+			scanf("%c", &ch);
+			code[b] = (int)ch;
+		} else if(b == -1) {
+			printf("%c", (char)code[a]);
+		} else {
+			code[b] -= code[a];
+			if(code[b] <= 0)
+				nextIP = c;
+		}
+		ip = nextIP;
+	}
+}
+
+void
+processFile(char *fileName)
+{
+	int *dataSet, i, num;
+	FILE *fp = fopen(fileName, "r");
+	fscanf(fp, "%d", &num);
+	dataSet = (int *)malloc(num * sizeof(int));
+	for(i = 0; i < num; i++)
+		fscanf(fp, "%d", &dataSet[i]);
+	fclose(fp);
+	subleq(dataSet);
+}
+
+int
+main(int argC, char *argV[])
+{
+	if(argC != 2)
+		printf("Usage : %s <subleq code file>\n", argV[0]);
+	else
+		processFile(argV[1]);
+	return 0;
+}