Oct 12, 2011

C program to insert a sub-string in to given main string from a given position.

C Strings:
C Program to insert a sub-string in to given main string from a given position. In this program we read two strings and replace the second string in the given position of the first string.Read more about C Programming Language .

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#include <stdio.h>
#include <conio.h>
#include <string.h>

void main()
{
 char a[10];
 char b[10];
 char c[10];
 int p=0,r=0,i=0;
 int t=0;
 int x,g,s,n,o;
 clrscr();

 puts("Enter First String:");
 gets(a);
 puts("Enter Second String:");
 gets(b);
 printf("Enter the position where the item has to be inserted: ");
 scanf("%d",&p);
 r = strlen(a);
 n = strlen(b);
 i=0;

 // Copying the input string into another array
 while(i <= r)
 {
  c[i]=a[i];
  i++;
 }
 s = n+r;
 o = p+n;

 // Adding the sub-string
 for(i=p;i<s;i++)
 {
  x = c[i];
  if(t<n)
  {
   a[i] = b[t];
   t=t+1;
  }
  a[o]=x;
  o=o+1;
 }

 printf("%s", a);
 getch();
}
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