can anyone help me fix this? just fill out whats needed my code is at the bottom

Question

can anyone help me fix this? just fill out whats needed my code is at the bottom

my h28.cpp --------------

#include <string>
#include <iostream>
#include <stdio.h>
#include <iomanip>
#include <cstring>
// Other headers if necessary
using namespace std;

#include "h28.h"

// Add your code here
size_t getLen(const char * s)
{
const char *str = s;
char * result;
while(*str) str++;
size_t len = str - s;
return len;
}
const char * findStr(const char *str1, const char *str2)
{
char result[255] = "A";
size_t len = getLen(str1);
size_t len2 = getLen(str2);

int j = 0;
for(int i = 0; i < len; i++)
{
if(strncmp(str1,str2,len2) == 0)
{
return str1;
}
}
return NULL;
}

---------------

my h28.h-----------

/**
@file h28.h
@author Stephen Gilbert
@version Declarations for CS 150 Homework
*/
#ifndef H28_H_
#define H28_H_

/**
* Finds the first occurrence of str2 which appears in str1.
* Returns a pointer to the first occurrence of str2 in str1.
* If no match is found, then a null pointer is returned.
* If str2 points to a string of zero length, then the argument str1 is returned.
*
* @param str1 C-string to search through.
* @param str2 C-string to search for.
* @return
*/
const char * findStr(const char *str1, const char *str2);

#endif
// DO NOT CHANGE ANY OF THESE LINES
#define strcmp static_assert(false, "strcmp not allowed");
#define strstr static_assert(false, "strstr not allowed");
#define strlen(s) static_assert(false, "strlen not allowed");
#define strcat(d, s) static_assert(false, "strcat not allowed");
#define strcpy(d, s) static_assert(false, "strcpy not allowed");
#define string static_assert(false, "string not allowed");

/workspace/cs150/hw/h28/ $make test h28.cpp:22:12: warning: unused variable 'result' [-Wunused-variable] char * result; h28.cpp:29:10: warning: unused variable 'result' [-Wunused-variable] char result [255] "A". h28.cpp:33 : 9: warning: unused variable ·j. [-Hunused-variable] h28.cpp:34:22: warning: comparison of integers of different signs: 'int' and 'size t' (aka 'unsigned long) [-Wsign-compare] for(int i=0; i len; i++) 4 warnings generated. TESTING H28--soctavio Checking function: Test your findStr function + Find at beginning.->Sote soma some something somantha solly sonny X Returns nullptr when it shouldn't + Find anything->Sote soma some something somantha solly sonny X Returns nullptr when it shouldn't X Returns nullptr when it shouldn't X Returns nullptr when it shouldn't X Returns nullptr when it shouldn't X Returns nullptr when it shouldn't X Returns nullptr when it shouldn't + Not found. Tests passing 3/10 (30%). H28:soctavio:ALL TESTS -- PASS 3/10 (30%).

Explanation / Answer

#include <string>
#include <iostream>
#include <stdio.h>
#include <iomanip>
#include "h28.h"
#include <cstring>
// Other headers if necessary
using namespace std;

// Add your code here
int getLen(const char * s)
{
const char *str = s;
int len = 0;
char * result;
while(*str){
str++;
++len;
}
return len;
}
const char * findStr(const char *str1, const char *str2)
{
int len = getLen(str1);
int len2 = getLen(str2);
int i ,j = 0 , count;
for (i = 0; i < len;)

{
int s = i;
j = 0;
count = 0;
  
while (str1[i] && str2[j] && (str1[i] == str2[j]))

{
++count;
i++;

j++;

}
if (count == len2)

{

return &str1[s];

}

else

i++;

}   
return NULL;
}
==================================================================

I tested by adding main function. You can run and let me know if there is any concern. I will help

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