#include <iostream>
#include <cstring>
using namespace std;
// Declare strcat and strlen functions before main
char* mystrcat(char* s1, const char* s2);
size_t mystrlen(const char* s);
int main(int argc, char** argv) {
const int MAX = 100;
char s1[MAX];
char s2[MAX];
cout << "Enter your first string up to 99 characters: ";
cin.getline(s1, sizeof(s1));
int size_s1 = strlen(s1);
cout << "Length of first string is " << size_s1 << "\n";
cout << "Enter your second string up to 99 characters: ";
cin.getline(s2, sizeof(s2));
int size_s2 = strlen(s2);
cout << "Length of second string is " << size_s2 << "\n";
cout << "Now the first string will be concatenated with the second string\n";
char* a = mystrcat(s1, s2);
// print the concatenated string
cout << a << endl;
// system("pause");
return 0;
}
// strcat function to concatenate two strings
char* mystrcat(char* s1, const char* s2) {
int indexOfs1 = strlen(s1);
int s2L = strlen(s2);
int indexOfs2 = 0;
do {
s1[indexOfs1] = s2[indexOfs2];
indexOfs1++;
indexOfs2++;
} while (indexOfs2 < s2L);
s1[indexOfs1] = '\0'; // add null terminator to the end of the concatenated string
return s1;
}
// Returns length of char array
size_t mystrlen(const char* s) {
int count = 0;
int i;
for (i = 0; s != '\0'; i++) { count++; } return count; }
You can try this code, and or you can choose a different compiler to run the code. I found this post on the internet; here author listed many cpp compilers, chose any online compiler and run the code.
