Hi
i'm trying to compile this code, but getting warning. need some help to understand what I'm doing wrong.
void printGraph(FILE *out, GraphRef G){
out = fopen (out, "w");
if( out==NULL ){
printf("Unable to open file %s for writing\n", out);
exit(1);
}
}
warning: passing arg 1 of `fopen' from incompatible pointer type
Hi
i'm trying to compile this code, but getting warning. need some help to understand what I'm doing wrong.void printGraph(FILE *out, GraphRef G){
out = fopen (out, "w");
if( out==NULL ){
printf("Unable to open file %s for writing\n", out);
exit(1);
}
}warning: passing arg 1 of `fopen' from incompatible pointer type
fopen is defined as
FILE* fopen(const char *path, const char *mode);
and you have fopen (out, "w"); where out is FILE*.
Hi
i'm trying to compile this code, but getting warning. need some help to understand what I'm doing wrong.
Instead of
out = fopen (out, "w");it must be
out = fopen ( filename, "w" );where filename is a string with the path to the file you want to write.
Remember, when you use the "w" if the file exists it will be overwritten, even if you don't write anything to it.
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