LAB SO S4

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#define BLOCK_SIZE 4096

int main(int argc , char *argv[])
{

char buf[BLOCK_SIZE],res[BLOCK_SIZE];
int i=0,nchar,nrmaj=0,nrcif=0;
    if (argc != 3)
    {
    perror("N-AI DAT DOUA ARGUMENTE");
    exit(1);
    }
    printf("%d\n",argc);
    int fd = open(argv[1],O_RDONLY);

    if(fd!=-1)
    {
        while(nchar=read(fd,buf,BLOCK_SIZE))

            for(i=0;i<nchar;i++)
        {
            if(buf[i]>='A'&& buf[i]<='Z')
                nrmaj++;
            if(buf[i]>='0'&&buf[i]<='9')
                nrcif++;
        }
    }
    else
        {
            perror ("Nu am putut deschide fisierul de input ");
            exit(2);
        }
        printf("sunt %d majuscule in texte.txt \n",nrmaj);
        printf("sunt %d cifre in texte.txt \n",nrcif);
        close(fd);
        int fd2 = open(argv[2],O_WRONLY);

int wbuf = sprintf(res,"Nr Majuscule %d \n Nr Cifre %d \n",nrmaj,nrcif);
write(fd2,res,wbuf);
close(fd2);
    return 0;
    }