C Program to Capitalize First Letter of Each Word in a File

This C Program capitalizes first letter of every word in a file.

Here is source code of the C Program to capitalize first letter of every word in a file. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C Program to Capitalize First Letter of every Word in a File

```
 */
```
```
#include <stdio.h>
```
```
#include <fcntl.h>
```
```
#include <stdlib.h>
```
```
int to_initcap_file(FILE *); 
```
```
 
```
```
void main(int argc, char * argv[])
```
```
{
```
```
    FILE *fp1;
```
```
    char fp[10];
```
```
    int p;
```
```
 
```
```
    fp1 = fopen(argv[1], "r+");
```
```
    if (fp1 == NULL)
```
```
    {
```

        printf("cannot open the file ");

```
        exit(0);
```
```
    }
```
```
    p = to_initcap_file(fp1);
```
```
    if (p == 1)    
```
```
    {    
```
```
        printf("success");
```
```
    }
```
```
    else
```
```
    {
```
```
        printf("failure");
```
```
    }
```
```
    fclose(fp1);
```
```
}
```
```
 
```

/* capitalizes first letter of every word */

```
int to_initcap_file(FILE *fp)
```
```
{
```
```
    char c;
```
```
 
```
```
    c = fgetc(fp);
```
```
    if (c >= 'a' && c <= 'z')
```
```
    {
```
```
        fseek(fp, -1L, 1);
```
```
        fputc(c - 32, fp);
```
```
    }
```
```
    while(c != EOF)    
```
```
    {
```
```
        if (c == ' ' || c == '\n')
```
```
        {
```
```
            c = fgetc(fp);
```
```
            if (c >= 'a' && c <= 'z')
```
```
            {
```
```
                fseek(fp, -1L, 1);
```
```
                fputc(c - 32, fp);
```
```
            }
```
```
        }
```
```
        else
```
```
        {
```
```
            c = fgetc(fp);
```
```
        }
```
```
    }
```
```
    return 1;
```
```
}
```

$ cc file5.c
$ a.out sample
success
$ cat sample
Wipro Technologies
File Copy Function
Successfully Read

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