Question

Write a 'C' program to accept two strings and concate them without using standard library function.

Answer 1

Answer:

#include <stdio.h>

int main()

{

char str1[50], str2[50], i, j;

printf("\nEnter first string: ");

scanf("%s",str1);

printf("\nEnter second string: ");

scanf("%s",str2);

/* This loop is to store the length of str1 in i

* It just counts the number of characters in str1

* You can also use strlen instead of this.

*/

for(i=0; str1[i]!='\0'; ++i);

/* This loop would concatenate the string str2 at

* the end of str1

*/

for(j=0; str2[j]!='\0'; ++j, ++i)

{

str1[i]=str2[j];

}

// \0 represents end of string

str1[i]='\0';

printf("\nOutput: %s",str1);

return 0;

}