Output does not appear in program C [duplicate]

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Hello, I have a C code that annotates, deletes, or lists students in a text document. He asks what I want to do. But when I type the letter of one of the options, nothing happens! 

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define NULO '
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define NULO '%pre%'
void removerLinha(int numOfLinha, FILE *arquivo){
    int line = 1;
    char content[90];
    rewind(arquivo);
    for(int i = 0; !feof(arquivo);i++){ 
    memset(arquivo, NULO, 100); 
    fgets(content, 101, arquivo); 
    fputc('\n', arquivo); 
    line = line + 1; 
    continue; 
    }
    line = line + 1;
}   

int main(void){
    int numeroDelete;
    FILE *log;
    char nome[75];
    char opcao;
    char ch;
    printf("O que voce deseja fazer?\n\n");
    printf("(N) Novo Aluno\n");
    printf("(D) Exluir Aluno\n");
    printf("(L) Listar Alunos\n");
    scanf("%c", opcao);
    if(opcao == 'n' || opcao == 'N'){
        printf("Nome do Aluno:\n ");
        scanf("%[^\n]", &nome );
        if(!log){
        log = fopen("log.txt", "w+");
        fprintf(log, "1: %[^\n]\n", nome);
        fclose(log);
    }else{
        log = fopen("log.txt", "r+");
        fprintf(log, "%[^\n]\n", nome);
        fclose(log);
    }
    }if(opcao == 'd' || opcao == 'D'){
    printf("Numero da linha a ser apagada: ");
    scanf("%d", numeroDelete);
    removerLinha(numeroDelete, log);
    }if(opcao == 'l' || opcao == 'L'){
        while( (ch=fgetc(log))!= EOF ){
            printf("%[^\n]", ch);
        }

    }
}

'
void removerLinha(int numOfLinha, FILE *arquivo){
    int line = 1;
    char content[90];
    rewind(arquivo);
    for(int i = 0; !feof(arquivo);i++){ 
    memset(arquivo, NULO, 100); 
    fgets(content, 101, arquivo); 
    fputc('\n', arquivo); 
    line = line + 1; 
    continue; 
    }
    line = line + 1;
}   

int main(void){
    int numeroDelete;
    FILE *log;
    char nome[75];
    char opcao;
    char ch;
    printf("O que voce deseja fazer?\n\n");
    printf("(N) Novo Aluno\n");
    printf("(D) Exluir Aluno\n");
    printf("(L) Listar Alunos\n");
    scanf("%c", opcao);
    if(opcao == 'n' || opcao == 'N'){
        printf("Nome do Aluno:\n ");
        scanf("%[^\n]", &nome );
        if(!log){
        log = fopen("log.txt", "w+");
        fprintf(log, "1: %[^\n]\n", nome);
        fclose(log);
    }else{
        log = fopen("log.txt", "r+");
        fprintf(log, "%[^\n]\n", nome);
        fclose(log);
    }
    }if(opcao == 'd' || opcao == 'D'){
    printf("Numero da linha a ser apagada: ");
    scanf("%d", numeroDelete);
    removerLinha(numeroDelete, log);
    }if(opcao == 'l' || opcao == 'L'){
        while( (ch=fgetc(log))!= EOF ){
            printf("%[^\n]", ch);
        }

    }
}
    
asked by anonymous 16.11.2018 / 15:45

1 answer

-1

You forgot the "&" character to address the entry, in the first scanf. What's more, there are more snippets of code with the same problem.

    
16.11.2018 / 15:51
click field in a table load the edit form with the selected id ___ ___ erkimt .sh Script to run a program in python inside Cron ______ qstntxt ___

Good morning. I'm having a problem with a python program that I did. What happens is that when I run my program through the command line with this command it works normal:

%pre%

So I did the following program in .sh

%pre%

When I run through it the program also works but when I include this command in crontab this way:

%pre%

My program starts execution, it goes into memory and it works for a few seconds and simply stops without error or without leaving the memory.

Could anyone help me generate a file that controls the execution of my program in python if mine is wrong? or would you have any tips on how to make it work?

    
______ azszpr341473 ___

Since you are apparently in %code% , you could dispense with your %code% , passing the responsibility of checking if another process is already running for your %code% code, see:

%pre%

That in turn would create the lock %code% file to control the single instance of the process.

What would allow such a configuration in its %code% :

%pre%

Reference: link

    
______ azszpr341471 ___

I solved the problem as my final cod was

%pre%     
___