/* C program to accept a string and a sub string and check if the sub string is present in the given string */

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

void main()
{
char str[80],search[10];
int count1=0,count2=0,i,j,flag;

clrscr();

puts(“Enter a string:”);
gets(str);

puts(“Enter search sub string:”);
gets(search);

while (str[count1]!=’\0′)
count1++;

while (search[count2]!=’\0′)
count2++;

for(i=0;i<=count1-count2;i++)
{
for(j=i;j<i+count2;j++)
{
flag=1;
if (str[j]!=search[j-i])
{
flag=0;
break;
}
}
if (flag==1)
break;
}
if (flag==1)
puts(“SEARCH SUCCESSFUL!”);
else
puts(“SEARCH UNSUCCESSFUL!”);
getch();
}
/*——————————
Output
Enter a string:
Hello how are you?
Enter search sub string:
how
SEARCH SUCCESSFUL!
——————————*/

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