Question

1. Experiment with the terminal and C programming   I want you to be able to setup a folder, change to a folder, create a new file with the editor (windows version is fine), rename files, delete files, and change permissions.
2. How to create a compiled program

• Create your source code; lets say it is named test.c
• Compile it using: gcc test.c –o test
• Change the permissions to execute for everyone (755)
• Run it by: ./test

3. Create two programs

• The first one that will print “Hello World.”
• The second one will take two command line arguments (numbers), then will add them and print the result (Hint: Google “gcc how to pass numeric command line arguments into your c program” and you have to use “atoi.”) You should run it something like./test 3 4 and it should print: 7 (assuming your test is your compiled program)
• Create a shell script that will run both of these compiled programs

Answer 1

test1.c
*********

#include <stdio.h>

int main()
{
printf("Hello world\n");
return 0;
}

test2.c
*********

#include <stdio.h>

int main(int argc, char *argv[])
{
   int a,b,sum;
   if(argc!=3)
   {
       printf("please use \"prg_name value1 value2 \"\n");
       return -1;
   }
  
   a = atoi(argv[1]);
   b = atoi(argv[2]);
   sum = a+b;
  
   printf("Sum of %d, %d is: %d\n",a,b,sum);
  
   return 0;
}

Run.sh
*********

./test1
./test2 10 20

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