Answer / guest

malloc returns a void pointer. It needs to be cast to char*
before allocating it to char* variable.
char *p = (char *)malloc(10); should do fine.

Answer / poornima

Nothing wrong.Its fine..
if u hve further doubt run the below code.

#include<stdio.h>
int main()
{
char *p=malloc(10);
if(p==NULL)
{
printf("malloc failed");
exit(0);
}
else
{
printf("malloc success\n");
p="hai";
printf("%s",p);
}
return 0;
}

o/p:
malloc success
hai

Answer / guest

Function calls are not allowed in initializers for global or
static variables.

Answer / splurgeop

malloc return an adress to the free memory..so we shud
store the adress i.e.
the above should be

char p=malloc(10);

program for reversing a selected line word by word when multiple lines are given without using strrev

0 Answers   IBM,

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Which is not valid in C a) class aClass{public:int x;}; b) /* A comment */ c) char x=12;

0 Answers  

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Why do we use int main?

0 Answers  

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What are the main characteristics of c language describe the structure of ac program?

0 Answers  

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If the size of int data type is two bytes, what is the range of signed int data type?

0 Answers  

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if the address of a[1,1] and a[2,1] are 1000 and 1010 respectively and each occupies 2 bytes then the array has been stored in what order?

4 Answers   Amazon, Apple, Bata, Google, NASA,

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what is a non volatile key word in c language?

1 Answers  

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CAN ANYONE PLEASE HELP ON THIS PROGRAM FOR MY EXAM..TQ Write a C program to help a H’s Restaurant automate its breakfast billing system. Your assignment should implement the following items: a. Show the customer the different breakfast items offered by the H’s Restaurant. b. Allow the customer to select more than one item from the menu. c. Calculate and print the bill to the customer. d. Produce a report to present your complete program and show more sample output. Assume that the H’s Restaurant offers the following breakfast menu: Plain Egg $2.50 Bacon and Egg $3.45 Muffin $2.20 French Toast $2.95 Fruit Basket $3.45 Cereal $0.70 Coffee $1.50 Tea $1.80 Your program must do the following task below: a. Define the data structs, menu item types with two components: menu item of type string and menu price of type double. Use an array to declare the data structs. b. Function get data to loads the data into the array menu list. c. Function show menu to show the different breakfast items offered by the restaurant and tell the user how to select the items. d. Function print receipt to calculates and prints the customer receipt. The billing amount should include a 5% tax. e. Format your output with two decimal places. The name of each item in the output must be left-justify. You may assume that the user selects only one item of a particular type. f. The two sample output as shown: Welcome to HiFi’s Restaurant 1 Bacon and Egg $3.45 1 Muffin $2.20 1 Coffee $1.50 Tax 5% $0.35 Amount Due $7.50

1 Answers  

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why TCS selected more student in the software field from all institution.

5 Answers   TCS,

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The OS is a program that uses various data structures. Like all programs in execution, you can determine the performance and other behavior of the OS by inspecting its state - the values stored in its data structures. In this part of the assignment, we study some aspects of the organization and behavior of a Linux system by observing values of kernel data structures exposed through the /proc virtual file system. The /proc virtual file system: Linux uses the /proc file system to collect information from kernel data structures. The /proc implementation provided with Linux can read many different kernel data structures. If you cd to /proc on a Linux machine, you will see a number of files and directories at that location. Files in this directory subtree each corresponds to some kernel data structure. The subdirectories with numeric names contain virtual files with information about the process whose process ID is the same as the directory name. Files in /proc can be read like ordinary ASCII files. You can open each file and read it using library routines such as fgets() or fscanf(). The proc (5) manual page explains the virtual files and their content available through the /proc file system. Requirements in detail: In this part, you are asked to write a program to report the behavior of the Linux kernel. Your program should run in two different versions. The default version should print the following values on stdout: • Processor type • Kernel version • The amount of memory configured into this computer • Amount of time since the system was last booted A second version of the program should run continuously and print lists of the following dynamic values (each value in the lists is the average over a specified interval): • The percentage of time the processor(s) spend in user mode, system mode, and the percentage of time the processor(s) are idle • The amount and percentage of available (or free) memory • The rate (number of sectors per second) of disk read/write in the system • The rate (number per second) of context switches in the kernel • The rate (number per second) of process creations in the system If your program (compiled executable) is called proc_parse, running it without any parameter should print out information required for the first version. Running it with two parameters "proc_parse <read_rate> <printout_rate>" should print out information required for the second version. read_rate represents the time interval between two consecutive reads on the /proc file system. printout_rate indicates the time interval over which the average values should be calculated. Both read_rate and printout_rate are in seconds. For instance, proc_parse 2 60 should read kernel data structures once every two seconds. It should then print out averaged kernel statistics once a minute (average of 30 samples). The second version of your program doesn't need to terminate.

0 Answers   Cognos,

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What is meant by global static? why we have to use static variable instead of Global variable

4 Answers   L&T,

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List some applications of c programming language?

0 Answers  

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