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IamNaeto

Update README.md

Oct 28, 2022

766d937 · Oct 28, 2022

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Name		Name	Last commit message	Last commit date
parent directory ..
0-whatsmyname.c		0-whatsmyname.c	0x0A. C - argc, argv	Sep 30, 2022
1-args.c		1-args.c	0x0A. C - argc, argv	Sep 30, 2022
100-change.c		100-change.c	0x0A. C - argc, argv	Sep 30, 2022
2-args.c		2-args.c	0x0A. C - argc, argv	Sep 30, 2022
3-mul.c		3-mul.c	0x0A. C - argc, argv	Sep 30, 2022
4-add.c		4-add.c	0x0A. C - argc, argv	Sep 30, 2022
README.md		README.md	Update README.md	Oct 28, 2022
_putchar.c		_putchar.c	0x0A. C - argc, argv	Sep 30, 2022
main.h		main.h	0x0A. C - argc, argv	Sep 30, 2022
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README.md

Outline

0x0A. C - Argc, argv

Resource

• Arguments to main
• argc and argv
• What does argc and argv mean?
• How to compile with unused variables

Tasks

0. It ain't what they call you, it's what you answer to : A program that prints its name, followed by a new line.
   • If you rename the program, it will print the new name, without having to compile it again.
   • You should not remove the path before the name of the program.
   • Compile the code this way: gcc -Wall -pedantic -Werror -Wextra -std=gnu89 0-whatsmyname.c -o mynameis
1. Silence is argument carried out by other means : A program that prints the number of arguments passed into it.
   • Your program should print a number, followed by a new line.
   • Compile the code this way: gcc -Wall -pedantic -Werror -Wextra -std=gnu89 1-args.c -o nargs
2. The best argument against democracy is a five-minute conversation with the average voter : A program that prints all the arguments it receives.
   • All arguments should be printed, including the first one.
   • Only print one argument per line, ending with a new line.
   • Compile the code this way: gcc -Wall -pedantic -Werror -Wextra -std=gnu89 2-args.c -o args
3. Neither irony nor sarcasm is argument : A program that multiplies two numbers.
   • Your program should print the result of the multiplication, followed by a new line.
   • You can assume that the two numbers and result of the multiplication can be stored in an integer.
   • If the program does not receive two arguments, your program should print Error, followed by a new line, and return 1.
   • Compile the code this way: gcc -Wall -pedantic -Werror -Wextra -std=gnu89 3-mul.c -o mul
4. To infinity and beyond : A program that adds positive numbers.
   • Print the result, followed by a new line.
   • If no number is passed to the program, print 0, followed by a new line.
   • If one of the number contains symbols that are not digits, print Error, followed by a new line, and return 1.
   • You can assume that numbers and the addition of all the numbers can be stored in an int.
   • Compile the code this way: gcc -Wall -pedantic -Werror -Wextra -std=gnu89 4-add.c -o add
5. Minimal Number of Coins for Change : A program that prints the minimum number of coins to make change for an amount of money.
   • Usage: ./change cents
   • Where cents is the amount of cents you need to give back.
   • if the number of arguments passed to your program is not exactly 1, print Error, followed by a new line, and return 1.
   • You should use atoi to parse the parameter passed to your program.
   • If the number passed as the argument is negative, print 0, followed by a new line.
   • You can use an unlimited number of coins of values 25, 10, 5, 2, and 1 cent.
   • Compile the code this way: gcc -Wall -pedantic -Werror -Wextra -std=gnu89 100-change.c -o change