Use pico to type and save the following program as labrep.c. Compile and run the program to observe that fork() returns the value of the child’s PID to the parent process and zero to the child process. (You don’t have to type the comments.) #include #include main ( ) { int result ; printf("%d: I am the parent. Remember my number!\n", getpid( ) ); printf("%d: I am now going to fork ... \n", getpid( ) ); result = fork ( ) ; if (result != 0) { /* the parent will execute this code */ printf("%d: My child's pid is %d\n", getpid ( ), result ); } else /* result == 0 */ { /* the child will execute this code */ printf("%d: Hi ! I am the child.\n", getpid ( ) ) ; exit (1) ; } printf("%d: like father like son. \n", getpid ( ) ); } Write the output of the program. Draw a process three and label the processes with their process IDs. Output Process Tree
Operations
In mathematics and computer science, an operation is an event that is carried out to satisfy a given task. Basic operations of a computer system are input, processing, output, storage, and control.
Basic Operators
An operator is a symbol that indicates an operation to be performed. We are familiar with operators in mathematics; operators used in computer programming are—in many ways—similar to mathematical operators.
Division Operator
We all learnt about division—and the division operator—in school. You probably know of both these symbols as representing division:
Modulus Operator
Modulus can be represented either as (mod or modulo) in computing operation. Modulus comes under arithmetic operations. Any number or variable which produces absolute value is modulus functionality. Magnitude of any function is totally changed by modulo operator as it changes even negative value to positive.
Operators
In the realm of programming, operators refer to the symbols that perform some function. They are tasked with instructing the compiler on the type of action that needs to be performed on the values passed as operands. Operators can be used in mathematical formulas and equations. In programming languages like Python, C, and Java, a variety of operators are defined.
- Use pico to type and save the following
program as labrep.c. Compile and run the program to observe that fork() returns the value of the child’s PID to the parent process and zero to the child process. (You don’t have to type the comments.)
#include <stdio.h>
#include <stdlib.h>
main ( )
{
int result ;
printf("%d: I am the parent. Remember my number!\n", getpid( ) );
printf("%d: I am now going to fork ... \n", getpid( ) );
result = fork ( ) ;
if (result != 0)
{ /* the parent will execute this code */
printf("%d: My child's pid is %d\n", getpid ( ), result );
}
else /* result == 0 */
{ /* the child will execute this code */
printf("%d: Hi ! I am the child.\n", getpid ( ) ) ;
exit (1) ;
}
printf("%d: like father like son. \n", getpid ( ) );
}
Write the output of the program. Draw a process three and label the processes with their process IDs.
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Output |
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Process Tree |
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