Question

Concatenation of two strings using pointers Step 1: Ask the user to input ni,n2 and create two character arrays (strings) with ni, n2 size using malloc. Step 2: create a 3rd array using malloc of size(n1+n2). Step 3: Ask the user to input String1 (of size nl) Step 4: Ask the user to input String2 (of size n2) Step 5: concatenate the two arrays and store them in String3 (of size nl+n2). Example: ABC EG Output: ABCEG

Please help me to make this c programming code!! Thank you!!

Answer 1

The code in c is given below.

#include<stdio.h>
int main()
{
   int n1,n2;
   printf("Please enter the value of n1 and n2: ");
   scanf("%d%d",&n1,&n2);/*user input sizes*/
   char *str1;
   char *str2;
   str1=(char*)malloc(sizeof(char)*n1);
   str2=(char*)malloc(n2*sizeof(char));
   printf("Please Enter string1: ");
   scanf("%s",str1);
   printf("Please Enter string2: ");
   scanf("%s",str2);
   char *str3;
   str3=(char*)malloc(sizeof(char)*(n1+n2));
   int i;
   for(i=0;i<n1;i++)
   {
   *(str3+i)=*(str1+i); /*copying the first string*/
   }
   for(i=0;i<n2;i++)
   {
   *(str3+i+n1)=*(str2+i); /*adding second string*/
   }
   for(i=0;i<n1+n2;i++)
   {
   printf("%c",*(str3+i)); /*printing the resultant string*/
   }
   return 0;  
}



The screenshot of the running code and output is given below.


1 2 8 10 #include<stdio.h> int main() 3 { 4 int n1, n2; 5 printf("Please enter the value of nl and n2: "); scanf("%d%d",&n1,&n2); 7 char *str1; char *str2; 9 str1=(char*) malloc(sizeof(char)*n1); str2=(char*) malloc(n2*sizeof(char)); 11 printf("Please enter string1: "); 12 scanf("%s", stri); 13 printf("Please Enter string2: "); 14 scanf("%s", str2); 15 char *str3; 16 str3=(char*)malloc(sizeof(char)*(n1+n2)); 17 int i; 18 for(i=0;i<n1; i++) 19 20 *(str3+i)=*(str1+i); 21 22 for(i=0; i<n2; i++) 23 24 *(str3+i+n1)=* (str2+i); w { } { } { 25 T for(i=0;i<n1+n2; i++) 26 27 28 29 30 31 .. printf("%c", *(str3+i)); } return; }



Please enter the value of n1 and n2: 3 2 Please Enter string1: ABC EF Please Enter string2: ABCEF Process exited after 13.94 seconds with return value o Press any key to continue







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