i am trying the following program and it gives some errors while compiling. i cant figure out what the error is. can someone please help me? thanks in advance.
Code:
#include<stdio.h>
#include<math.h>
float detrm( float[][], float );
void cofact( float[][], float );
void trans( float[][], float[][], float );
main()
{
float a[ 25 ][ 25 ], k, d;
int i, j;
printf( "ENTER THE ORDER OF THE MATRIX:\n" );
scanf( "%f", &k );
printf( "ENTER THE ELEMENTS OF THE MATRIX:\n" );
for ( i = 0;i < k;i++ )
{
for ( j = 0;j < k;j++ )
{
scanf( "%f", &a[ i ][ j ] );
}
}
d = detrm( a, k );
printf( "THE DETERMINANT IS=%f", d );
if ( d == 0 )
printf( "\nMATRIX IS NOT INVERSIBLE\n" );
else
cofact( a, k );
}
/******************FUNCTION TO FIND THE DETERMINANT OF THE MATRIX************************/
float detrm( float a[ 25 ][ 25 ], float k )
{
float s = 1, det = 0, b[ 25 ][ 25 ];
int i, j, m, n, c;
if ( k == 1 )
{
return ( a[ 0 ][ 0 ] );
}
else
{
det = 0;
for ( c = 0;c < k;c++ )
{
m = 0;
n = 0;
for ( i = 0;i < k;i++ )
{
for ( j = 0;j < k;j++ )
{
b[ i ][ j ] = 0;
if ( i != 0 && j != c )
{
b[ m ][ n ] = a[ i ][ j ];
if ( n < ( k – 2 ) )
n++;
else
{
n = 0;
m++;
}
}
}
}
det = det + s * ( a[ 0 ][ c ] * detrm( b, k – 1 ) );
s = -1 * s;
}
}
return ( det );
}
/*******************FUNCTION TO FIND COFACTOR*********************************/
void cofact( float num[ 25 ][ 25 ], float f )
{
float b[ 25 ][ 25 ], fac[ 25 ][ 25 ];
int p, q, m, n, i, j;
for ( q = 0;q < f;q++ )
{
for ( p = 0;p < f;p++ )
{
m = 0;
n = 0;
for ( i = 0;i < f;i++ )
{
for ( j = 0;j < f;j++ )
{
b[ i ][ j ] = 0;
if ( i != q && j != p )
{
b[ m ][ n ] = num[ i ][ j ];
if ( n < ( f – 2 ) )
n++;
else
{
n = 0;
m++;
}
}
}
}
fac[ q ][ p ] = pow( -1, q + p ) * detrm( b, f – 1 );
}
}
trans( num, fac, f );
}
/*************FUNCTION TO FIND TRANSPOSE AND INVERSE OF A MATRIX**************************/
void trans( float num[ 25 ][ 25 ], float fac[ 25 ][ 25 ], float r )
{
int i, j;
float b[ 25 ][ 25 ], inv[ 25 ][ 25 ], d;
for ( i = 0;i < r;i++ )
{
for ( j = 0;j < r;j++ )
{
b[ i ][ j ] = fac[ j ][ i ];
}
}
d = detrm( num, r );
inv[ i ][ j ] = 0;
for ( i = 0;i < r;i++ )
{
for ( j = 0;j < r;j++ )
{
inv[ i ][ j ] = b[ i ][ j ] / d;
}
}
printf( "\nTHE INVERSE OF THE MATRIX:\n" );
for ( i = 0;i < r;i++ )
{
for ( j = 0;j < r;j++ )
{
printf( "\t%f", inv[ i ][ j ] );
}
printf( "\n" );
}
}
the errors are...
[ERROR CODE]
/home/samy/programs/inversematrix/main.cpp:61: error: stray ‘\342’ in program
/home/samy/programs/inversematrix/main.cpp:61: error: stray ‘\200’ in program
/home/samy/programs/inversematrix/main.cpp:61: error: stray ‘\223’ in program
/home/samy/programs/inversematrix/main.cpp:72: error: stray ‘\342’ in program
/home/samy/programs/inversematrix/main.cpp:72: error: stray ‘\200’ in program
/home/samy/programs/inversematrix/main.cpp:72: error: stray ‘\223’ in program
/home/samy/programs/inversematrix/main.cpp:104: error: stray ‘\342’ in program
/home/samy/programs/inversematrix/main.cpp:104: error: stray ‘\200’ in program
/home/samy/programs/inversematrix/main.cpp:104: error: stray ‘\223’ in program
/home/samy/programs/inversematrix/main.cpp:115: error: stray ‘\342’ in program
/home/samy/programs/inversematrix/main.cpp:115: error: stray ‘\200’ in program
/home/samy/programs/inversematrix/main.cpp:115: error: stray ‘\223’ in program
/home/samy/programs/inversematrix/main.cpp:3: error: multidimensional array must have bounds for all dimensions except the first
/home/samy/programs/inversematrix/main.cpp:4: error: multidimensional array must have bounds for all dimensions except the first
/home/samy/programs/inversematrix/main.cpp:5: error: multidimensional array must have bounds for all dimensions except the first
/home/samy/programs/inversematrix/main.cpp:5: error: multidimensional array must have bounds for all dimensions except the first
/home/samy/programs/inversematrix/main.cpp: In function ‘int main()’:
/home/samy/programs/inversematrix/main.cpp:22: error: cannot convert ‘float (*)[25]’ to ‘float’ for argument ‘1’ to ‘float detrm(float)’
/home/samy/programs/inversematrix/main.cpp:28: error: cannot convert ‘float (*)[25]’ to ‘float’ for argument ‘1’ to ‘void cofact(float)’
/home/samy/programs/inversematrix/main.cpp: In function ‘float detrm(float (*)[25], float)’:
/home/samy/programs/inversematrix/main.cpp:61: error: expected ‘)’ before numeric constant
/home/samy/programs/inversematrix/main.cpp:62: error: expected ‘)’ before ‘;’ token
/home/samy/programs/inversematrix/main.cpp:72: error: expected ‘)’ before numeric constant
/home/samy/programs/inversematrix/main.cpp: In function ‘void cofact(float (*)[25], float)’:
/home/samy/programs/inversematrix/main.cpp:104: error: expected ‘)’ before numeric constant
/home/samy/programs/inversematrix/main.cpp:105: error: expected ‘)’ before ‘;’ token
/home/samy/programs/inversematrix/main.cpp:115: error: expected ‘)’ before numeric constant
/home/samy/programs/inversematrix/main.cpp:119: error: cannot convert ‘float (*)[25]’ to ‘float’ for argument ‘1’ to ‘void trans(float)’[/CODE]