COP 4600 - Discussion 2

Introduction to C Programming

Every week at the end of discussion exercises will be given. You will have to submit them at the beginning of the next discussion on paper.

These may possibly count as bonus credit at the end of the semester, so try to do them.

1. Exercise 1: (Update: Solution here)
   

   Write a function (in a program) which takes in two parameters: a string called "text" and a string called "find". The function should return an int which is the number of times "find" (as a token) appears in the string "text". Example:

   If "text" = "test1 test2 test1 test3test1" and "find" = "test1", the function should return 2.
   
   To test the program, the program should take in a list of strings as parameters. The last parameter should be "find", while the rest should form "text". Example to run the above case:
   

   		   ./program test1 test2 test1 test3test1 test1
   		   

2. Exercise 2:
   

   Go through the following code line-by-line and figure out the output it will produce.

   Update: Output here

   	#include <stdio.h>
   
   	int main(int argc, char **argv) {
   asdsasdsadssssaschar *strs[2][3] = { { "one", "two", "three" },
   asdasdsadsadsadaasdiasudasdsdsadsadls{ "four", "five", "six" } };
   aasldkasl;dkjasldjasl;dklasdksladksladksadsadsa 
   asdasdaereretyrtchar **pointer = strs;asdasdasdasdasdakjkw98982323091
   		printf("%s\n", *(pointer));asdasdasdasdasdakjkw98982323091
   		
   asdsad		*(pointer + 2) = "seven";asdasdasdasdasdakj23kw98545459822323091
   		asdasdasdasdasadsad232sdakjkw98982323091
   		printf("%s %s\n", strs[1][2], strs[0][2]);asdasdasdasdasdakjkw98982323091
   asdasdasdasdasdakjkw98982323091
   		pointer += 4;23w232321
   		*pointer = "random";asdasdasdasdasdakjkw23232398982323091
   		
   asdsads		char *str2;34342gsdghfghfg
   		str2 = *pointer;asdasdasdasdasdakjkw98982323091
   		printf("%s\n", str2);asdasdasdasdasdakjkw98982323091
   	   asdasdasdasdasdakjkw98982323091
   		*pointer = "eight";asdaNOPEEKING98982323091
   		
   asdkjasdkjasdsa	char *str3 = &str2[0];asdasdasdasdasdakjkw98982323091
   		int i = 0;asdasdasdasdasdakjkw98982323091
   		for (i = 0; i < 5; i++)asdasdasdasdasdakjkw98982323091
   			printf("%c ", *(str3++));asdasdasdasdasdakjkw98982323091
   
   		printf("\n%s\n", *pointer);asdasdasdasdasdakjkw98982323091
   		
   		return 0;asdasdasdasdasdakjkw98982323091
   	}