Go4Expert - Help with a program

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Help with a program

Code:

#include<stdio.h>

#include<string.h>



int main()

{



    int i;

    char line[100];

    char line2[100];

    



    printf("Enter some lines : ");

    scanf("%[^\n]",line);

    printf("2:");

    scanf("%[^\n]",line2);



    if((i = strlen(line)) >= 80)

    {

        printf("%s",line);

    }

    if(strlen(line2) >= 80)

    {

        printf("%s",line2);

    }

    getchar();

    return(0);

}

the main aim of making this program is that it will input 2 lines and output only that line that is 80 or more in length.

errors :-
1. There is no compile error.
2. the second scanf(); function does not inputs.
3. No printf funtion occurs.

help me run this program successfully.

thanks in advance.

Re: Help with a program

The problem happen by the '\n' of the line.Since it gets the input till the newline the entered '\n' will remain in the buffer .

That '\n' will come as a input for the line2.It too get the input till the '\n' . So it comes out immediately . So you need to clear the '\n'.You can do this by getchar().

Code:

#include<stdio.h>

#include<string.h>



int main()

{



    int i;

    char line[100];

    char line2[100];





    printf("Enter some lines : ");

    scanf("%[^\n]",line);

    printf("2:");

    getchar(); // Will get the "\n" in the buffer

    scanf("%[^\n]",line2);



    if((i = strlen(line)) >= 80)

    {

        printf("%s",line);

    }

    if(strlen(line2) >= 80)

    {

        printf("%s",line2);

    }

    getchar();

    return(0);

}

But always don't use

Code:

scanf("%[^\n]",line2);

Because it will cause the buffer overflow some times . Instead use fgets .