C++

Forum

 
cannot convert char to char & illegal use of floating point

moezz1 (1)
Excuse me for asking such a simple silly question but i'm new to programming and in need of some serious help.

Below is a simple program that the user enters the number of subjects taken --> the grade (A,B,C etc.) --> and the program calculates and prints the students transcript including all the cgpa.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
 

    #include<stdio.h>
    #include<conio.h>
    #include<string.h>

    void main()

	{

      char string[10];
      char grade[10];
      float out[10];
      int num;
      float cgpa=0.0;



		for(int x=0;x<num;x++)

      	{


         	printf("\nEnter the number of subjects? \n ");
				scanf("%d",&num);

      		printf("\nEnter Student Name: \n");
      		scanf("%s",&string[x]);

      		printf("\nEnter Student Grade: \n");
				scanf("%s",&grade[x]);


      		if(grade[x]>="A" || grade[x]>="a")
				out[x]==4.0;
				else if(grade[x]>="B" || grade[x]>="b")
				out[x]==3.0;
				else if(grade[x]>="C" || grade[x]>="c")
				out[x]==2.0;
				else if(grade[x]>="D" || grade[x]>="d")
				out[x]==1.3;
      		else if(grade[x]>="F" || grade[x]>="f")
				out[x]==0.1;
				else
				printf("You've entered a wrong grade");




         }                                


       		cgpa+=out;
            cgpa=cgpa/num;





      printf("%s\n", string);
      printf("%s\n", grade);
      printf("%f\n", cgpa);


      getch();

   

    }



My main problem is that i keep on getting the two following errors:

- Cannot convert char to char*
- illegal use of floating point


The errors i'm getting are on the following lines:

1
2
3
4
5
6
7
8
9
10
11
12
 

    if(grade[x]>="A" || grade[x]>="a")
    				out[x]==4.0;
    				else if(grade[x]>="B" || grade[x]>="b")
    				out[x]==3.0;
    				else if(grade[x]>="C" || grade[x]>="c")
    				out[x]==2.0;
    				else if(grade[x]>="D" || grade[x]>="d")
    				out[x]==1.3;
          		else if(grade[x]>="F" || grade[x]>="f")
    				out[x]==0.1;


the illegal use of floating point error is on this line:

1
2
 
    cgpa+=out;


Thanks in advanced.
Yanson (885)
try changing "A" to 'A'
Topic archived. No new replies allowed.