Write a C program to concatenate two strings without using built in functions.
SOURCE CODE:
/*Program to concatenate two strings without using string library functions.*/
#include<stdio.h>
#include<conio.h>
void main()
{
char str1[50],str2[20];
int i,j,len=0;
clrscr();
printf("\nEnter String1:\n");
gets(str1);
printf("\nEnter String2:\n");
gets(str2);
for(i=0;str1[i]!='\0';i++)
len++;
for(j=0;str2[j]!='\0';j++,i++)
str1[i]=str2[j];
str1[i]='\0';
printf("\nConcatenated string is:\n");
puts(str1);
}
OUTPUT:
Write a C program to compare two strings without using built in functions.
SOURCE CODE:
/*Program to compare two strings.*/
#include<stdio.h>
#include<conio.h>
void main()
{
char str1[30],str2[30];
int i,flag=0;
clrscr();
printf("Enter String1:\n");
gets(str1);
printf("Enter String2:\n");
gets(str2);
for(i=0;str1[i]!='\0'&&str2[i]!='\0';i++)
{
if(str1[i]!=str2[i])
{
flag=1;
break;
}
}
if(flag==1)
printf("Strings are not same.");
else
printf("String1 is same as String2.");
}
OUTPUT:
