How to read a file in C but not count the header in the counter?

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How to read a file in C but not count the header in the counter?

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#1 by (0 votes)

0

FILE

THE FIRST LINE IS THE HEADING THAT I WANT TO DISCONTINUE. So that the counter "num" does not begin counting from the HEADER

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SOURCE CODE BELOW

#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
#include <unistd.h>

main(){
FILE * input_text, *output_text;
char line[1024];
char * last;
int num = 0;
setlocale(LC_CTYPE,"");
    if((input_text = fopen("entrada03.txt","r")) == NULL)
        printf("\n[ERRO]Travou o Nintendo!\n");
    else
        printf("\n[SUCESSO]Sucesso ao abrir o arquivo!\n\n");
    printf("\n\nImprimindo a saida\n\n");
    sleep(2);
    output_text = fopen("saida02.txt","w");

            while(!feof(input_text)){
                fgets(line, 1024, input_text);
                    last = strtok(line, "\n");                                  //"last" recebe variável "line" até o delimitador "\n"
                        while(last != NULL){                                    //Se last não for "NULL" executa essa
                            printf("%d: %s\n",num, last);
                                last = strtok(NULL, "\n");                      //Se last for "NULL" até o delimitador "\n"
                                fprintf(output_text,"%d: %s\n", num, line);
                        }
                    num++;
            }
fclose(input_text);
fclose(output_text);
printf("\n");
system("pause");
}

c

asked by anonymous 09.09.2018 / 21:11

1 answer

Problem String Language C [duplicate] PDO Error - Call to a member functio on null

score 0 · Accepted Answer

see if this is what you would like it to be done:

What I changed was to include if (num! = 0) to display on the screen and then save to your file, so it reads / writes anything other than line 0;

Another point, be careful because you are using C ++ applications in your code, as long as it works, but it is not very elegant ...

I hope you have helped. Hugs !!

#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
#include <unistd.h>

int main(){
FILE * input_text, *output_text;
char line[1024];
char * last;
int num = 0;
setlocale(LC_CTYPE,"");
    if((input_text = fopen("entrada03.txt","r")) == NULL)
        printf("\n[ERRO]Travou o Nintendo!\n");
    else
        printf("\n[SUCESSO]Sucesso ao abrir o arquivo!\n\n");
    printf("\n\nImprimindo a saida\n\n");
    sleep(2);
    output_text = fopen("saida02.txt","w");

        while(!feof(input_text)){
            fgets(line, 1024, input_text);
                last = strtok(line, "\n");                                  //"last" recebe variável "line" até o delimitador "\n"
                    while(last != NULL){                                    //Se last não for "NULL" executa essa
                        if(num != 0)
                        printf("%d: %s\n",num, last);
                            last = strtok(NULL, "\n");                      //Se last for "NULL" até o delimitador "\n"
                            if(num != 0)                      
                            fprintf(output_text,"%d: %s\n", num, line);
                    }
                num++;
        }
fclose(input_text);
fclose(output_text);
printf("\n");
system("pause");
}