System Software and Labs Code Ⅱ

L=0; C=0
for i in `cat $1`
do
        let L=$L+1
        let D=$L%2
        if [ $D = 1 ]
        then    echo $i
                read -e j
        else    if [ $i = $j ]
                then    echo "(O)"
                        let C=$C+1
                else    echo "(X)"
                        echo $i
                fi
        fi
done
let L=$L/2
echo "$C / $L"

QnA

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int main(int argc, char * argv[]) {
        int L=0, C=0;
        char string1[100], string2[100];
        FILE *fp = fopen(argv[1], "rt");
        while(fscanf(fp, "%s", string1)!=-1) {
                L+=1;
                if (L%2==1) {
                        printf("%s \n", string1);
                        scanf("%s", string2);
                }
                else {
                        if (strcmp(string1, string2)==0) {
                                printf("(O) \n");
                                C+=1;
                        }
                        else {
                                printf("(X) \n");
                                printf("%s \n", string1);
                        }
                }

gcc QnA.c

./a.out/home/folder/q.txt

echo: echo [-neE] [arg …]
Write arguments to the standard output.

read: read [-ers] [-a array] [-d delim] [-i text] [-n nchars] [-N nchars] [-p prompt] [-t timeout] [-u fd] [name …]
Read a line from the standard input and split it into fields.

cd: cd [-L|[-P [-e]] [-@]] [dir]
Change the shell working directory.

pwd: pwd [-LP]
Print the name of the current working directory.

let: let arg [arg …]
Evaluate arithmetic expressions.

‘cat’ Concatenate and write files

‘mkdir’ creates directories with the specified names.

‘chmod’ changes the access permissions of the named files.

gcc — GNU project C and C++ compiler