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Quick Segmentation Fault

This is a discussion on Quick Segmentation Fault within the C Programming forums, part of the General Programming Boards category; Hey guys, I'm getting a segmentation fault and I have no idea why. Code: adicionavertice (GRAFO *g) { int adicionainteiro; ...

  1. #1
    C Beginner
    Join Date
    Dec 2011
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    Portugal
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    Quick Segmentation Fault

    Hey guys, I'm getting a segmentation fault and I have no idea why.

    Code:
    adicionavertice (GRAFO *g)
    { int adicionainteiro;
      char condi[50];
      printf("Qual e o numero do vertice que pretende adicionar ?\n");
      scanf("%d",&adicionainteiro);
      printf("Qual e a condicao que pretende ter associada a este vértice ?\n");
      scanf("%s",condi);
      printf("que rei");
    This is the output :
    Code:
    Qual e o numero do vertice que pretende adicionar ?
    2
    Qual e a condicao que pretende ter associada a este vértice ?
    x0>0
    Segmentation fault.

  2. #2
    spurious conceit MK27's Avatar
    Join Date
    Jul 2008
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    segmentation fault
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    8,300
    If you have no idea why there's a seg fault, why do you think that is all of the relevant code?

    Note that printf uses stdout which is buffered, meaning the seg fault could be after this line:
    Code:
      printf("que rei");
    But before stdout is flushed and "que rei" is displayed. To avoid buffering for debugging purposes, use fprintf(stderr, ...).
    stahta01 likes this.
    C programming resources:
    GNU C Function and Macro Index -- glibc reference manual
    The C Book -- nice online learner guide
    Current ISO draft standard
    CCAN -- new CPAN like open source library repository
    3 (different) GNU debugger tutorials: #1 -- #2 -- #3
    cpwiki -- our wiki on sourceforge

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