Dynamic Memory Allocation 1- Revisit the matrix addition function. Write the pro

Question

Dynamic Memory Allocation

1- Revisit the matrix addition function. Write the program so that it would not need to take a third pointer for the result matrix. Instead, have the function return a pointer to the results matrix. Provide space for the results matrix inside of the function through dynamic memory allocation.

2- Write a string concatenation function that takes two pointers to the strings to be concatenated and have the function return a pointer to the concatenated string. Again, provide the space for the result string through dynamic memory allocation.

Please i need the code in C Program not C++ or C+!

Explanation / Answer

2.

Program code:

// stringconcat.cpp : Defines the entry point for the console application.

//

#include "stdafx.h"

#include <stdio.h>

#include<stdlib.h>

#include<string.h>

#include<iostream>

using namespace std;

char *stringConcat(const char *, char *);

//main function

int main()

{

//declare the required variables

int i=0;

char *str1="good",*str2="morning";

printf("String after concatenation of string: %s and string: %s = "%s" ", str1,str2,stringConcat(str1,str2));

system("pause");

return 0;

}

//definition of function to cocatenate the two strings

char *stringConcat(const char *s, char *d)

{

char *str3;

str3 = (char *)malloc(sizeof(char)*(strlen(d)+strlen(d)+1));

if(str3!=NULL)

{

strcpy(str3,s);

strcat(str3," ");

strcat(str3,d);

}

return str3;

}

Sample output:

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