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What is that number and what is that character? The single question mark (?) should be replaced with: After the program starts you should enter the character.

What is that number and what is that character? The single question mark (?) should be replaced with: After the program starts you should enter the character.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider the following program. It opens filel and file2 which have already been created with: rm filel; rm file2; touch filel; touch file2; echo "ghi" > filel echo "gst" > file2 Therefore, each file contains 4 bytes. Here is the program (it will not compile as is because it contains a question mark): /* problen7.c */ Hinclude cunistd.h> int main(void) char buffer "W'; open("file1", 2); open("file2",2); 1seek (3, ?,1); write(3,&bufter, 1); 1seek (4, -2,2); write(4,&buffer, 1); read(e, &buffer, 1); write(4, 8buffer, 1); 1seek (3,-3,2); write(3, &buffer, 1); write(4, "\n",1); 1seek(4,1,0); write(4, &buffer, 1); close(3); close(4); Without a further header file compilation will produce a warning, but this will not affect this problem. When you enter a certain character and the single question mark is replaced with an appropriate number cat filel produces: gxi and cat file2 produces:
Transcribed Image Text:Consider the following program. It opens filel and file2 which have already been created with: rm filel; rm file2; touch filel; touch file2; echo "ghi" > filel echo "gst" > file2 Therefore, each file contains 4 bytes. Here is the program (it will not compile as is because it contains a question mark): /* problen7.c */ Hinclude cunistd.h> int main(void) char buffer "W'; open("file1", 2); open("file2",2); 1seek (3, ?,1); write(3,&bufter, 1); 1seek (4, -2,2); write(4,&buffer, 1); read(e, &buffer, 1); write(4, 8buffer, 1); 1seek (3,-3,2); write(3, &buffer, 1); write(4, "\n",1); 1seek(4,1,0); write(4, &buffer, 1); close(3); close(4); Without a further header file compilation will produce a warning, but this will not affect this problem. When you enter a certain character and the single question mark is replaced with an appropriate number cat filel produces: gxi and cat file2 produces:
What is that number and what is that character? The single question mark (?) should be replaced with: After the program starts you should enter the character:
Transcribed Image Text:What is that number and what is that character? The single question mark (?) should be replaced with: After the program starts you should enter the character:
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