C Program to List All Lines containing a given String

#include < stdio.h>
#include < stdlib.h>
#include < string.h>
 
int search(FILE *, char *);
 
void main(int argc, char * argv[])
{
    FILE *fp1;
    int p;
 
    fp1 = fopen(argv[1], "r+" );
    if (fp1 == NULL)
    {
        printf("cannot open the file " );
        exit(0);
    }
    search(fp1, argv[2]);
    fclose(fp1);
}
 
/* Searches the lines */
int search(FILE *fp, char * str)
{
    FILE *fp1;
    fp1 = fopen("fp1" ,"w" );
    char s[10],c;
    int len = strlen(str);
    int i = 0;
    int d;
    int seek = fseek(fp, 0, 0);
    c = fgetc(fp);
    while (c != EOF)
    {
        if (c == ' ' || c == '\n')
        {
            s[i] = '\0';
            i = 0;
            if (strcmp(s, str) == 0)
            {
                while (c = fgetc(fp) != '\n')
                {
                    fseek(fp, -2L, 1);
                    d = ftell(fp);
                }
                while ((c = fgetc(fp)) != '\n')
                {
                    fputc(c, fp1);
                }
            }
        }
        else
        {
            s[i] = c;
            i++;
        }
        c = fgetc(fp);
    }
    return 1;
}

Output

 example hi
hi hello everyone
again hi to the late comers

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