PROBLEM 31:

Write a C program to find a sub-string in a string.
Sample Input: you just blew my mind
Substring to search: my

Sample Output: Substring found.

CODE:

#include<stdio.h>
main()
{
    // Variable declaration//
    char a[100];
    char b[100];
    int i=0,j=0,count=0,count1=0;
    /*Input*/
    printf("Enter string:");
    gets(a);
    printf("Enter substring to found:");
    gets(b);
     /* actual Working */
for(i=0;b[i]!='\0';i++)//here i count total substring words
{
count=count+1;
}
for(i=0;a[i]!='\0';i++)//here I compare string1 value with string2
{
    if(a[i]==b[j])// if it match so increment in count1 will perform
    {
        count1++;
        j++;

    }

    if(count1==count)//if substring words equal to count1 so loop will break
    {
        printf("Substring found");
        break;
    }
}
if(count1!=count)// if count1 not equal
    {
        printf("no Substring found");
    }
return 0;
}

Program Output:

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