程序接收信号sigsegv分割错误

Question

I made a program from a diffrent compiler. I cant run it on university. the programm read a text file called board.txt, it counts diffrent words etc

here is the project to download: https://mega.co.nz/#!CN11xS6Q!w549XDt4T7huRyTjv3J-b3a8vcsbbMrzEGIb2X4RRSM

Here's part of the code:

void countwords(FILE *board){
    int word=0;
    char *a;

    printf("\ncounting words...\n");
    rewind(board);
    while(!feof(board)){
        *a=fgetc(board);
        if(*a==' ')
            word++;
    }
    printf("%d",word+1);
}

Answer 1

a is a pointer, and you never initialize it. Effectively, it points to some random location in memory; and you are writing to that memory location! It was just dumb luck that it didn't crash on your own computer.

The pointer variable itself is useless; you only read and process one character at a time, so a simple char variable will suffice.

void countwords(FILE *board){
    int word=0;
    char c;

    printf("\ncounting words...\n");
    rewind(board);
    while(!feof(board)){
        c=fgetc(board);
        if(c==' ')
            word++;
    }
    printf("%d",word+1);
}

Make the same adjustment in your other functions.