C Program to Perform String Matching Using String Library

This is a C Program to perform string matching using String Library. A text and a pattern is given as input. The pattern is searched for in the text and all instances of the pattern are given as output.

Here is source code of the C Program to Perform String Matching Using String Library. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

```
#include<stdio.h>
```
```
 
```
```
int main() {
```
```
    char str1[30], str2[30];
```
```
    int i;
```
```
 
```
```
    printf("\nEnter two strings :");
```
```
    gets(str1);
```
```
    gets(str2);
```
```
 
```
```
    i = 0;
```

    while (str1[i] == str2[i] && str1[i] != '\0')

```
        i++;
```
```
    if (str1[i] > str2[i])
```
```
        printf("str1 > str2");
```
```
    else if (str1[i] < str2[i])
```
```
        printf("str1 < str2");
```
```
    else
```
```
        printf("str1 = str2");
```
```
 
```
```
    return (0);
```
```
}
```

Output:

$ gcc StringMatchingUsingStringLib.c
$ ./a.out
 
Enter two strings :
Hingu
Pingu
 
str1 < str2

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