Always show. But during the compilation of the main c cannot link getline functions, only add getline functions to the main. C to compile properly running behind, I ask you,
Error:
main. C
/* simple addition calculator */
# include
# define MAXLINE 100
Double atof (char [] s);
Int getline (char [] s, int Max);
Int main (void)
{
Char line [MAXLINE];
Double sum=0;
While (getline (line, MAXLINE) & gt; 0 {
Printf (" The sum is % f. \ n ", sum +=atof (line));
}
return 0;
}
//don't add complains!!
/* for a line of string, and store it in array s largest is less than the Max */
/* int getline (char [] s, int Max)
{
Int I, a;
For (I=0; (a=getchar ())!='\ n' & amp; & Max & gt;=0; I++, Max -) {
S [I]=a;
}
If (a=='\ n')
{
S [i++]=a;
}
S [I]='\ 0';
return i;
} */
isspace. C
/*
If s for Spaces, it returns 1, otherwise return 1
*/
Int isspace (char s)
{
If (s==")
{
return 1;
}
return 0;
}
isdigit. C
//judge if a is a number, if it returns 1, otherwise return 1
Int isdigit (int a)
{
If (' 0 '& lt;=a & lt;='9')
{
return 1;
}
return -1;
}
atof. C
/* converts a string to a number, for example: "123" is converted to double type 123 */
# include
Int isspace (char a);
Int isdigit (char a);
Double atof (char [] s)
{
Int I, sign;
double val;
For (I=0; [I] isspace (s); I++)
;
Sign=(s [I]=='-')? 1:1;
[I] if (s=='-' | | s [I]=='+')
i++;
for(; [I] isdigit (s); I++) {
Val val +=10.0 * (s [I] - '0');
}
If (s [i++]=='. ')
{
Int k=1;
for(; [I] isdigit (s); I++)
Val=val + [I] - '0' (s)/(pow (10, k));
}
Return val.
}
getline. C
/* for a line of string, and store it in array s largest is less than the Max */
#include
Int getline (char [s], int Max)
{
Int I, a;
For (I=0; (a=getchar ())!='\ n' & amp; & Max & gt;=0; I++, Max -) {
S [I]=a;
}
If (a=='\ n')
{
S [i++]=a;
}
S [I]='\ 0';
return i;
}
CodePudding user response:
System also provides a getline functions, name clashes, don't know which one to link? You put in the main, nature is take function under the same file,CodePudding user response:
In the name or not, missing linkUndefined reference to ` getLINE_N '
Collect2. Exe: error: ld returned 1 exit status
CodePudding user response:
Is my statement?CodePudding user response: