Thread: Evaluation of structure's element against input not working!

Hello World!

Let me get straight to the point. Here's the code:

Code:

void readfile(){
	char row[55];
	int n=0;

	if(source_file=fopen("meccs.txt","r"))
		printf("1) file succefully opened!\n");

	fgets(row,55,source_file);
	number_of_games=atoi(&row);

	 while(fgets(row,55,source_file)){
sscanf(row,"%d%d%d%d%d%s%s",&games[n].round,&games[n].home_final,&games[n].guest_final,&games[n].home_half,&games[n].guest_half,&games[n].home_team,&games[n].guest_team);
		n++;
	}
}

The first function reads in the data from a file, and puts it into a structure, row by row. The structure deifinition looks like this:

Code:

struct game{
	int round;

	int home_final;
	int guest_final;

	int home_half;
	int guest_half;

	char home_team[20];
	char guest_team[20];
};

And the function that does not work as it is supposed to looks like this:

Code:

void get_team(){
	int i=0,n=0;
	char team_name[20];

	printf("Give me a team name:\n");
	scanf("%s",team_name);
	if(team_name==games[0].home_team)
		printf("ok!\n");
}

NOTE: While trying to figure out, what is the problem, I simlified the get_team() function. You are supposed to enter the team name: "Agarak" . The contents of the games[0].home_team is "Agarak", thus the condition should evaluate to true - at least, in my oppinion... games[] is an array of structures, and if I print out the contents with a for loop, it seems to contain all the data correctly... I suspect, that there may be some stray \0 or \n characters in the strings, because of scanf() or sscanf() or fgets(), but I couldn't find proper references, which would shed some light on this matter. Any help ideas would be welcome!

You can't if check a string like that. You need to use strcmp.

strcmp - C++ Reference

Calling fgets() followed by sscanf() mostly lead to problems so append whitespace to the sscanf() format specification. The first fget() isn't followed by a sscanf(), meaning that the file offset is on the second line, past the team name of "Agarak". Moreover string comparison uses strcmp().

Code:

fgets(row,55,source_file);
number_of_games=atoi(&row);
/* need a sscanf() here */

while(fgets(row,55,source_file)) {
    sscanf(row,"%d%d%d%d%d%s%s ",&games[n].round,&games[n].home_final,&games[n].guest_final,
        &games[n].home_half,&games[n].guest_half,&games[n].home_team,&games[n].guest_team);
    n++;
}

Note the blank space after the sscanf() control string format.