Compiling Warning

This is a discussion on Compiling Warning within the C Programming forums, part of the General Programming Boards category; Can someone please help me? When I compile the code, the line where I call the function gives me a ...

  1. #1
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    Compiling Warning

    Can someone please help me? When I compile the code, the line where I call the function gives me a warning, saying: 'Passing argument 1 from incompatible pointer type.' I have no idea how to fix it!!

    Code:
    #include <stdio.h>
    #include <string.h>
    #include <stdlib.h>
    #include <math.h>
    
    
    #define N 3
    
    
    
    int find_inner_product (int *a,int *b,int size)
    	
    {int inner_product=0,i=0;
    	for (i=0;i<size;i++)
    		
    		{inner_product+=*(a+i)*(*b+i);}
    		
    	return inner_product;} /*function to do the inner product*/
    
    int i=0,j=0,row_number,column,inner_product;
    
    int main()
    {
    	int matrix1[N][N],matrix2[N][N];
    	
    	
    	printf("Please enter the values of the 3x3 Matrix: ");
    	
    	for	( i = 0; i < N; i++ ) 
    		{for( j = 0;  j< N; j++ )
    		
    		{scanf("%d", &matrix1[i][j]);}
    		} /*this for loop goes through every number and stores it in the first matrix*/
    	
    	
    	printf("\nPlease enter the values of the second 3x3 Matrix: ");
    	
    	for	( i = 0; i < N; i++ ) 
    		{for( j = 0;  j< N; j++ )
    		
    		{scanf("%d", &matrix2[i][j]);}
    		} /*this for loop goes through every number and stores it in the second matrix*/
    
    	
    	find_inner_product(matrix1, matrix2, N)
    	printf("%d", inner_product);
    	
    	
    }
    
    
    }

  2. #2
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    Code:
    #include <stdio.h>
    #include <string.h>
    #include <stdlib.h>
    #include <math.h>
    
    
    #define N 3
    
    
    
    int find_inner_product (int *a,int *b,int size)
    	
    {int inner_product=0,i=0;
    	for (i=0;i<size;i++)
    		
    		{inner_product+=*(a+i)*(*b+i);}
    		
    	return inner_product;} /*function to do the inner product*/
    
    int i=0,j=0,row_number,column,inner_product;    <---- move this inside main
    int main()           <--- the correct form is ... int main (void)
    {
    	int matrix1[N][N],matrix2[N][N];
    	
    	
    	printf("Please enter the values of the 3x3 Matrix: ");
    	
    	for	( i = 0; i < N; i++ ) 
    		{for( j = 0;  j< N; j++ )
    		
    		{scanf("%d", &matrix1[i][j]);}
    		} /*this for loop goes through every number and stores it in the first matrix*/
    	
    	
    	printf("\nPlease enter the values of the second 3x3 Matrix: ");
    	
    	for	( i = 0; i < N; i++ ) 
    		{for( j = 0;  j< N; j++ )
    		
    		{scanf("%d", &matrix2[i][j]);}
    		} /*this for loop goes through every number and stores it in the second matrix*/
    
    	
    	inner_product = find_inner_product(matrix1, matrix2, N); 	
                 printf("%d", inner_product);
    	
    	return 0;   <--- main always returns an integer value 
    }
    
    
    }
    [/QUOTE]

  3. #3
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    Im still not getting the answer I should be. I need the dot product of the first line of the matrix and its not correct with my current code

  4. #4
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    Nevermind, problem solved

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