Read string

This is a discussion on Read string within the C Programming forums, part of the General Programming Boards category; Hi there, I was writing a program to read in a string and print it out in reverse. But for ...

  1. #1
    Registered User
    Join Date
    Apr 2010
    Posts
    32

    Question Read string

    Hi there,

    I was writing a program to read in a string and print it out in reverse. But for some reason it doesnt compile.The error said

    In function ‘main’:
    error; too few arguments to function ‘tnirp’

    Code:
    #include<stdio.h>
    #include<string.h>
    
    void tnirp(char s[],int max);
    
    int main(int argc, char * argv[]){
            
        char s[100]; 
        
        printf("Enter string\n");
    
        fgets(s,100,stdin);
        
        tnirp(s);
    
        return 0;
    }
    
    void tnirp(char s[],int max){
    
        int i,j;
    
        char rstr[100];
      
       for(i=strlen(s)-1,j=0; i>=0; i--, j++){
    
           rstr[j]=s[i];
    
          }
      
       rstr[j]='\0'; 
    
       printf("%s",rstr);
    
       printf("\n");
     
    }
    I dont know wats going wrong.

    Thanks in advance every1

  2. #2
    and the hat of wrongness Salem's Avatar
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    > void tnirp(char s[],int max);
    This expects 2

    > tnirp(s);
    This has 1

    What's the issue?
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
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  3. #3
    Registered User
    Join Date
    Apr 2010
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    32
    Oh i got it .


    Damn it i am such a doushe.



    My corrections


    Code:
    #include<stdio.h>
    #include<string.h>
    
    void tnirp(char s[]);
    
    int main(int argc, char * argv[]){
            
        char s[100]; 
        
        printf("Enter string\n");
    
        fgets(s,100,stdin);
        
        tnirp(s);
    
        return 0;
    }
    
    void tnirp(char s[]){
    
        int i,j;
    
        char rstr[100];
      
       for(i=strlen(s)-1,j=0; i>=0; i--, j++){
    
           rstr[j]=s[i];
    
          }
      
       rstr[j]='\0'; 
    
       printf("%s",rstr);
    
       printf("\n");
     
    }

    thanks salem.

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