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Author: arana23

cs392_printf.c

@@ -0,0 +1,123 @@
+//I pledge my honor that I have abided by the Stevens Honor System - Aparajita Rana
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+
+
+int getSize (char * s) {
+    char * t;    
+    for (t = s; *t != '\0'; t++)
+        ;
+    return t - s;
+}
+
+char* reverse(int temp, char* temp2){
+	//OK IDEA IS MOD EACH VAL
+	//char* flipped;
+	int temp3=0;
+	int count=0;
+	//int length=getSize(val);
+	do{
+			temp3=temp%10;
+			temp2[count]=temp3+48;
+			//counter++;
+			temp=temp/10;
+			count++;
+		}while(temp!=0);
+
+	return temp2;
+}
+
+int cs392_printf(const char * format, ...){
+
+va_list args;
+va_start(args, format);
+int counter=0;
+
+//iterative over “format” and find specifiers
+while (*format != '\0') {
+
+	// get the first argument with va_arg
+	// the following is an example of handling integer format “%d”
+	if(*format == '%'){
+
+		format ++;
+		if(*format == 0)
+			break;
+				
+		if(*format == 'd'){
+		int arg_int = va_arg(args, int); 
+		// this helps you get the argument corresponding to “%d”
+
+		int temp=arg_int;
+		int get_nums=arg_int;
+		char* temp2;
+		char* copy;
+		int temp3=0;
+		int count=0;
+
+		//convert int to char*, and then mod 10 -> count bytes (amt chars)
+		do{
+			temp3=temp%10;
+			temp2[count]=temp3+48;
+			counter++;
+			temp=temp/10;
+			count++;
+		}while(temp!=0);
+		
+
+		count=0;
+		temp=arg_int;
+		do{
+			temp3=temp%10;
+			temp2[count]=temp3+48;
+			//counter++;
+			temp=temp/10;
+			count++;
+		}while(temp!=0);
+
+		//null case (ends line)
+		temp2[count]='\0';
+		//actual printing
+
+		//in order that it is all on one line
+		int index=count;
+		while(index>-1){
+			putc(temp2[index], stdout);
+			index--;
+		}
+		//puts(temp2);
+		}
+
+
+		if (*format == 's') {
+	    char *arg_str = va_arg(args, char*);
+
+	    int size=strlen(arg_str);
+	    fputs(arg_str, stdout);
+	    //strlen
+	    counter+=size;
+		}
+
+		if (*format == 'c') {
+	    char arg_char = va_arg(args, int);
+	    fputc(arg_char,stdout);
+		}
+	}
+
+	//prints regular string
+	else {
+		char arg_char = *format; 
+		putc(arg_char, stdout);
+		counter++;
+	}
+
+	++format;
+    }
+
+    va_end(args);
+    putc('\n',stdout);
+    return counter;
+
+}

cs392_printf.h

@@ -0,0 +1,4 @@
+#include "cs392_printf.c"
+
+//prot
+static int cs392_fprintf(const char *format, ...);

practice.c

@@ -0,0 +1,25 @@
+/*
+I pledge my honor that I have abided by the Stevens Honor System - Aparajita Rana
+
+[1] Create an integer variable 
+[2] Assign a constant value to that variable (whatever value you want)
+[3] Create an integer pointer
+[4] Make that pointer point to the integer variable 
+[5] Change that integer variable to another constant value by dereferencing the pointer created in [3] (instead of directly changing that integer variable)
+[6] Print the integer variable again. 
+[7] Please upload your .c file.
+*/
+
+#include <stdio.h>
+
+int main()
+{
+	int x = 10; // steps 1 & 2
+    int *pointy = &x; // steps 3 & 4
+
+    printf("x = %d\n",x); // print the og variable to compare change
+    (*pointy)+=2; //step 5
+    printf("x = %d\n",x); // step 6
+
+    return 0;
+}