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This commit is contained in:
Hugo RABAN
2024-12-09 11:58:49 +01:00
parent edf66d071b
commit 2e11e7886c
187 changed files with 8670 additions and 0 deletions
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137
23SCR/SCR011/SCR011.txt Normal file
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1/
meme chose avec write(1);
2/
#include<stdio.h>
#include<fcntl.h>
#include<unistd.h>
#include<stdlib.h>
#define szbuf 256
int main(int argc, char const *argv[])
{
char buf[szbuf];
int f1,f2,n,m;
if(argc<3)
{
fprintf(stderr, "Usage : %s <SRC.FILE><TRUC.FILE>",argv[1]);
exit(1);
}
f1 = open(argv[1],O_RDONLY);
if(f1 == -1)
{
perror("Opening source file fails");
exit(2);
}
f2 = open(argv[2],O_WRONLY|O_TRUNC|O_CREAT,0600);
if(f2 == -1)
{
perror("Opening destination file fails");
exit(3);
}
while(n = read(f1,buf,szbuf))
{
m = write(f2,buf,n);
if(m == -1)
{
perror("Writing in file fails");
exit(4);
}
}
close(f1);
close(f2);
exit(0);
}
3/
#include<stdio.h>
#include<fcntl.h>
#include<unistd.h>
#include<stdlib.h>
#include <string.h>
#define szbuf 256
int main(int argc, char const *argv[])
{
char buf[szbuf];
int a, b, c, d;
if(argc<2)
{
fprintf(stderr, "Usage: %s ./store_numb <file_name>",argv[1]);
exit(1);
}
a = open(argv[1],O_WRONLY|O_TRUNC|O_CREAT,0600);
if(a == -1)
{
perror("Opening destination file fails");
exit(2);
}
b = open(argv[2],O_WRONLY|O_TRUNC|O_CREAT,0600);
if(b == -1)
{
perror("Opening destination file fails");
exit(3);
}
write(1,"Numb --> ",9);
memset(buf,0,szbuf);
while(b = read(0,buf,szbuf))
{
d = (int)strtol(buf,NULL,0);
c = write(a,&d,sizeof(int));
if(c == -1)
{
perror("Writing in file fails");
exit(3);
}
memset(buf,0,szbuf);
write(1,"Numb --> ",9);
}
close(a);
exit(0);
}
4/
#include<stdio.h>
#include<fcntl.h>
#include<unistd.h>
#include<stdlib.h>
#include <string.h>
#define szbuf 256
int main(int argc, char const *argv[])
{
char buf[szbuf];
int a, b, c, d;
if(argc<2)
{
fprintf(stderr, "Usage: %s ./store_numb <file_name>",argv[1]);
exit(1);
}
a = open(argv[1],O_WRONLY|O_TRUNC|O_CREAT,0600);
if(a == -1)
{
perror("Opening destination file fails");
exit(2);
}
write(1,"Numb --> ",9);
memset(buf,0,szbuf);
while(b = read(0,buf,szbuf))
{
d = (int)strtol(buf,NULL,0);
c = write(a,&d,sizeof(int));
if(c == -1)
{
perror("Writing in file fails");
exit(3);
}
memset(buf,0,szbuf);
write(1,"Numb --> ",9);
}
close(a);
exit(0);
}

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23SCR/SCR011/a.out Executable file
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49
23SCR/SCR011/get_numb.c Normal file
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#include<stdio.h>
#include<fcntl.h>
#include<unistd.h>
#include<stdlib.h>
#include<string.h>
#define szbuf 256
int main(int argc, char const *argv[])
{
char buf[szbuf];
int fd, l, n, x;
long int i, offset;
if(argc<3)
{
fprintf(stderr, "Usage: %s ./get_numb <file_name> <offset>",argv[1]);
exit(1);
}
fd = open(argv[1],O_RDONLY);
if(fd == -1)
{
perror("Opening file fails");
exit(2);
}
i = strtol(argv[2],NULL,0);
offset = i* sizeof(int);
l = lseek(fd,offset,SEEK_SET);
if(l == -1)
{
perror("lseek fails");
exit(3);
}
n = read(fd,&x,sizeof(int));
if(n ==-1)
{
perror("road in file fails");
exit(4);
}
if(n == 0)
{
printf("Offset is out of range!\n");
}
else
{
printf("The number at offset %d is 0x%08e --> %d\n",i,x,x);
}
close(fd);
exit(0);
}

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23SCR/SCR011/numbers.dat Normal file
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0
23SCR/SCR011/numbers.txt Normal file
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46
23SCR/SCR011/put_numb.c Normal file
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#include<stdio.h>
#include<fcntl.h>
#include<unistd.h>
#include<stdlib.h>
#include <string.h>
#define szbuf 256
int main(int argc, char const *argv[])
{
char buf[szbuf];
int a, b, c, d;
if(argc<2)
{
fprintf(stderr, "Usage: %s ./store_numb <file_name>",argv[1]);
exit(1);
}
a = open(argv[1],O_WRONLY|O_TRUNC|O_CREAT,0600);
if(a == -1)
{
perror("Opening destination file fails");
exit(2);
}
b = open(argv[2],O_WRONLY|O_TRUNC|O_CREAT,0600);
if(b == -1)
{
perror("Opening destination file fails");
exit(3);
}
write(1,"Numb --> ",9);
memset(buf,0,szbuf);
while(b = read(0,buf,szbuf))
{
d = (int)strtol(buf,NULL,0);
c = write(a,&d,sizeof(int));
if(c == -1)
{
perror("Writing in file fails");
exit(3);
}
memset(buf,0,szbuf);
write(1,"Numb --> ",9);
}
close(a);
exit(0);
}

41
23SCR/SCR011/read_file.c Normal file
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#include<stdio.h>
#include<fcntl.h>
#include<unistd.h>
#include<stdlib.h>
#define szbuf 256
int main(int argc, char const *argv[])
{
char buf[szbuf];
int f1,f2,n,m;
if(argc<3)
{
fprintf(stderr, "Usage : %s <SRC.FILE><TRUC.FILE>",argv[1]);
exit(1);
}
f1 = open(argv[1],O_RDONLY);
if(f1 == -1)
{
perror("Opening source file fails");
exit(2);
}
f2 = open(argv[2],O_WRONLY|O_TRUNC|O_CREAT,0600);
if(f2 == -1)
{
perror("Opening destination file fails");
exit(3);
}
while(n = read(f1,buf,szbuf))
{
m = write(f2,buf,n);
if(m == -1)
{
perror("Writing in file fails");
exit(4);
}
}
close(f1);
close(f2);
exit(0);
}

39
23SCR/SCR011/store_nb_rep.c Normal file
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#include<stdio.h>
#include<fcntl.h>
#include<unistd.h>
#include<stdlib.h>
#include <string.h>
#define szbuf 256
int main(int argc, char const *argv[])
{
char buf[szbuf];
int fd,x;
off-t l;
unsigned int x;
long int i, offset;
if(argc<4)
{
fprintf(stderr, "Usage: %s ./get_numb <file_name> <offset>",argv[1]);
exit(1);
}
fd = open(argv[1],O_RDONLY);
if(fd == -1)
{
perror("Opening file fails");
exit(2);
}
x = (unsigned int) strtol(argv[2],NULL,16);
i = (unsigned int) strtol(argv[3],NULL,16);
offset = i x sizeof(int);
l = lseek(fd,0,SEEK_SET);
if(l == -1)
{
close(fd);
exit(3);
}
close(a);
exit(0);
}

30
23SCR/SCR011/store_numb.c Normal file
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@@ -0,0 +1,30 @@
#include<stdio.h>
#include<fcntl.h>
#include<unistd.h>
#include<stdlib.h>
#define szbuf 256
int main(int argc, char const *argv[])
{
char buf[szbuf];
int f1,f2,n,m;
if(argc<2)
{
fprintf(stderr, "Usage : %s <file_name>",argv[0]);
exit(1);
}
fd = open(argv[1],O_WRONLY|O_TRUNC|O_CREAT,0600);
if(fd == -1)
{
perror("Opening source file fails");
exit(2);
}
write (1, "Numb---> ", 9);
while(n = read (0, buf, szbuf)){
m = write (fd, buf, n);
if
}
close(fd);
exit(0);
}