Day 1

2022/day1/Makefile

@@ -0,0 +1,10 @@
+solution-part%: solution-part%.c
+	gcc $< -o $@
+
+test-%: solution-% example.txt
+	$< example.txt
+
+run-%: solution-% realinput.txt
+	$< realinput.txt
+
+.PHONY: $(patsubst %,run-%, 1 2) $(patsubst %,test-%, 1 2)

2022/day1/example.txt

@@ -0,0 +1,14 @@
+1000
+2000
+3000
+
+4000
+
+5000
+6000
+
+7000
+8000
+9000
+
+10000

2022/day1/solution-part1.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <string.h>
+
+int main( int argc, char *argv[] ){
+	if( argc == 2 ) {
+
+		char buffer[10] = {'\0'};
+		FILE *fp=fopen(argv[1], "r");
+		unsigned int value = 0, total=0, largest=0;
+		
+		while (!feof (fp)){
+			fgets(buffer, 10, fp);
+			//fscanf(fp, "%d\n", &value);
+
+			
+			if (strlen(buffer) == 1){
+				if ( total > largest ) largest=total;
+				total=0;
+			} else {
+				sscanf(buffer,"%d\n",&value);
+				total+=value;
+			}
+
+
+		}
+		printf("The largest is %d\n", largest);
+		fclose(fp);
+
+
+
+		return 0;
+	} else {
+		printf("You need to provide a file\n");
+		return 1;
+	}
+}

2022/day1/solution-part2.c

@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <string.h>
+
+void printLargest(int length, unsigned long list[length]){
+	unsigned int sum = 0;
+	printf("The largest %d are: ", length);
+	for (int i = 0; i < length; ++i) {
+		sum += list[i];
+		printf("%d", list[i] );
+		if ( i < length-1 ) printf(", ");
+	}
+	printf("\nThe total is: %d\n", sum);
+
+}
+
+void addToList(unsigned int length, unsigned long list[length], unsigned int contender){
+	for ( int i = 0; i < length; ++i ){
+		if ( contender > list[i] ){
+			for (int j = length-1; j>i; --j){
+				list[j] = list[j-1];
+			}
+			list[i] = contender;
+			break;
+		}
+	}
+}
+
+int main( int argc, char *argv[] ){
+	if( argc == 2 ) {
+
+		char buffer[10] = {'\0'};
+		FILE *fp=fopen(argv[1], "r");
+		unsigned int value = 0, total=0;
+		unsigned long largest[3]={0,0,0};
+		
+		while (!feof (fp)){
+			buffer[0]='\0';
+			value=0;
+			fgets(buffer, 10, fp);
+
+			printf( " - %s\n", buffer );
+			
+			if (strlen(buffer) == 1){
+				printf("Total %d\n", total);
+				addToList(3,largest,total);
+				total=0;
+			} else {
+				sscanf(buffer,"%d\n",&value);
+				total+=value;
+			}
+
+
+		}
+		printf("Total %d\n", total);
+		addToList(3,largest,total);
+		printLargest(3,largest);
+		//printf("The largest is %d\n", *largest);
+		fclose(fp);
+
+
+
+		return 0;
+	} else {
+		printf("You need to provide a file\n");
+		return 1;
+	}
+}