I keep getting this fault on a lot of the codes I write, I'm not exactly sure why so I'd really appreciate it if someone could explain the idea to me.
For example this code
Code:
#include <stdio.h>
main()
{
unsigned long a=0;
unsigned long b=0;
int z;
{
printf("Enter two digits you want to add seperated by a space:");
scanf("%u %u", a, b);
}
z= a + b;
printf("\n%u\n", z);
}
Its because I forgot the &'s! Okay I got it nevermind
---------- Post updated at 11:39 AM ---------- Previous update was at 10:33 AM ----------
Code:
#include <stdio.h>
main()
{
unsigned long c=0;
unsigned long a=0;
unsigned long b=0;
unsigned long z;
unsigned long noBits = 32;
unsigned long x = (1 << noBits - 1);
unsigned long y = 129;
int i;
unsigned long k;
unsigned long t;
unsigned long g;
{
printf("Please choose a function\n Calc (1)\n Binary convertor (2)\n");
scanf("%u", &c);
{
if (c == 1)
{
{printf("\n 1 for addition\n 2 for subtraction\n 3 for multiplication\n 4 for division\n");
scanf("%u", &g);
printf("\nEnter two digits seperated by a space:");
scanf("%u %u", &a, &b);
if (g==1)
{z= a + b;
printf("\n%u\n", z);}
if (g==2)
{z=a - b;
printf("\n%u\n", z);}
if (g==3)
{(z= a * b);
printf("\n%u\n", z);}
if (g==4)
{(z= a / b);
printf("\n%u\n", z);}
printf("\n%u\n", z);
}
}
if (c == 2)
{printf("Enter any whole number:");
scanf("%d", &y);
for (i=noBits - 1; i >= 0; i--)
{
printf("i = %d ", i);
x = 1 << i;
k = x & y;
if (k != 0){
printf("binary = 1\n");
} else {
printf("binary = 0\n");
}
}
}
}
}
}
why doesnt the calculator work!
Last edited by sizzler786; 09-30-2013 at 06:38 AM..
Reason: solved
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LEARN ABOUT REDHAT
sysinfo
SYSINFO(2) Linux Programmer's Manual SYSINFO(2)NAME
sysinfo - returns information on overall system statistics
SYNOPSIS
#include <sys/sysinfo.h>
int sysinfo(struct sysinfo *info);
DESCRIPTION
Until Linux 2.3.16, sysinfo used to return information in the following structure:
struct sysinfo {
long uptime; /* Seconds since boot */
unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
unsigned long totalram; /* Total usable main memory size */
unsigned long freeram; /* Available memory size */
unsigned long sharedram; /* Amount of shared memory */
unsigned long bufferram; /* Memory used by buffers */
unsigned long totalswap; /* Total swap space size */
unsigned long freeswap; /* swap space still available */
unsigned short procs; /* Number of current processes */
char _f[22]; /* Pads structure to 64 bytes */
};
and the sizes were given in bytes. Since Linux 2.3.23 (i386), 2.3.48 (all architectures) the structure is
struct sysinfo {
long uptime; /* Seconds since boot */
unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
unsigned long totalram; /* Total usable main memory size */
unsigned long freeram; /* Available memory size */
unsigned long sharedram; /* Amount of shared memory */
unsigned long bufferram; /* Memory used by buffers */
unsigned long totalswap; /* Total swap space size */
unsigned long freeswap; /* swap space still available */
unsigned short procs; /* Number of current processes */
unsigned long totalhigh; /* Total high memory size */
unsigned long freehigh; /* Available high memory size */
unsigned int mem_unit; /* Memory unit size in bytes */
char _f[20-2*sizeof(long)-sizeof(int)]; /* Padding for libc5 */
};
and the sizes are given as multiples of mem_unit bytes.
sysinfo provides a simple way of getting overall system statistics. This is more portable than reading /dev/kmem. For an example of its
use, see intro(2).
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
ERRORS
EFAULT pointer to struct sysinfo is invalid
CONFORMING TO
This function is Linux-specific, and should not be used in programs intended to be portable.
The Linux kernel has a sysinfo system call since 0.98.pl6. Linux libc contains a sysinfo() routine since 5.3.5, and glibc has one since
1.90.
SEE ALSO proc(5)Linux 2.0 1997-08-25 SYSINFO(2)
09-30-2013
