View difference between Paste ID: TZLh6Pqs and pTGvBxae

 #include <stdio.h>
 #include <string.h>
 
 // This fails if str isn't correctly terminated
 int nums1(const char *str, size_t unused) {
 	char *a;
 	a = (char *)str;
 	int num = 0;
 
 	printf("%x: ", a);
 	if(!str) return num;
 	while(*a) {
 		if(*a == ',') num++;
-		printf("%x ", a);
+		printf("(%c) %x ", *a, a);
 		a++;
 	}
 	printf("\n");
 
 	return num;
 }
 
 // This fails if str isn't correctly terminated
 int nums2(const char *str, size_t unused) {
 	int i;
 	int num = 0;
 	printf("%x: ", str);
 	if(!str) return num;
 	for(i = 0; i < strlen(str); i++) {
-		printf("%x ", &str[i]);
+		printf("(%c) %x ", str[i], &str[i]);
 		if(str[i] == ',') num++;
 	}
 	printf("\n");
 
 	return num;
 }
 
 // likely the safest assuming a correct len is passed in
 int nums3(const char *str, size_t len) {
 	int i;
 	int num = 0;
 
 	printf("%x: ", str);
 
 	if(!str) return num;
 
 	for(i = 0; i < strnlen(str, len); i++) {
-		printf("%x ", &str[i]);
+		printf("(%c) %x ", str[i], &str[i]);
 		if(str[i] == ',') num++;
 	}
 	printf("\n");
 
 	return num;
 }
 
-#define nums(x, y) nums1(x, y)
+// I'm not so sure @koorogi
 int nums4(const char *str, size_t len) {
 	int num = 0;
 
 	printf("%x: ", str);
 	if(!str) return num;
 
 	const char *a = strchr(str, ',');
 	while (a) {
 		// Print the whole string of what's left
 		printf("(%s) %x ", a, a);
 		a = strchr(a + 1, ',');
-	char str3[9] = "5, 10";
+		num++;
 	}
 	printf("\n");
-	for(i = 0; i <= 9; i++)
+
-		str3[i] = 0x7F;
+
-	printf("%d\n", nums(str3, 9));
+
 
 #define nums(x, y) nums4(x, y)
 #define STRSIZE 9
 
 int main(int argc, char *argv[]) {
 	printf("%d\n", nums("", 0));
 	printf("%d\n", nums("5, 10", 6));
 
 	char str1[] = "5, 10";
 	printf("%d\n", nums(str1, strlen(str1)));
 
 	char *str2 = "5, 10";
 	printf("%d\n", nums(str2, strlen(str2)));
 
 	char str3[STRSIZE] = "5, 10";
 	// Overflow str3 by 1
 	int i;
 	for(i = 0; i <= STRSIZE; i++)
 		str3[i] = 0x61;
 	printf("%d\n", nums(str3, STRSIZE));
 	char str4[STRSIZE] = "5, 10";
 	// Overflow str4 by 1 after "5, 10"
 	for(i = 5; i <= STRSIZE; i++)
 		str4[i] = 0x61;
 	printf("%d\n", nums(str4, STRSIZE));
 
 	// Never trust the user...
 	printf("%d\n", nums(NULL, 0));
 
 	return 0;
 }