Error in inversion of a string

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Error in inversion of a string

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#1 by (2 votes)

1

I'm trying to invert a string through a function but it is giving error, but I do not know where it is wrong.

Just below is my code.

#include<stdio.h>
#include<stdlib.h>
#include <string.h>

 char troca(char nome[100], char nome1[100]);

 int main(void)
{
   char nome[100];
   printf("Informe o nome para ser invertida :");
   scanf("%s", nome);
   printf("%s\n", troca(nome));
   system("pause");
   return 0;
}

char troca(char nome[100], char nome1[100])
  {
    int c = 0, i;
    for(i = strlen(nome) - 1; i >= 0; i--)
    {
      nome[c] = nome[i];
      c++;
    }
    nome1[c] = '#include<stdio.h>
#include<stdlib.h>
#include <string.h>

 char troca(char nome[100], char nome1[100]);

 int main(void)
{
   char nome[100];
   printf("Informe o nome para ser invertida :");
   scanf("%s", nome);
   printf("%s\n", troca(nome));
   system("pause");
   return 0;
}

char troca(char nome[100], char nome1[100])
  {
    int c = 0, i;
    for(i = strlen(nome) - 1; i >= 0; i--)
    {
      nome[c] = nome[i];
      c++;
    }
    nome1[c] = '%pre%';
    return nome1[c];
  }
';
    return nome1[c];
  }

c string

asked by anonymous 26.12.2017 / 17:30

1 answer

Make global reference in C # How to use try, catch, finally, and exception in php

score 2 · Answer 1

There are several errors there:

You are not passing the second argument, in fact the parameter is not necessary
Is not returning something useful by using
Not accepting spaces in data entry
Some errors would appear if some of these errors were corrected.

It gets better:

#include <stdio.h>
#include <string.h>

char *troca(char nome[100]) {
    for (int i = 0, j = strlen(nome) - 1; i < j; i++, j--) {
        char temp = nome[i];
        nome[i] = nome[j];
        nome[j] = temp;
    }
    return nome;
}

int main(void) {
   char nome[100];
   printf("Informe o nome para ser invertida :");
   scanf("%[^\n]s", nome);
   printf("%s\n", troca(nome));
}

See running on ideone . And in Coding Ground . Also put it in GitHub for future reference .