수다닷컴

질문 제목 :dct forward transform이미지 픽셀 배열에 dct수행하는 소스예요질문 내용 :f(u,v)=(1/4)cucv∑(x=0에서7까지)∑(y=0에서7까지)f(x,y)cos((2x+1)u(3.14)/16)cos((2y+1)u(3.14)/16)

if u=0 - cu= 1/√2 else cu=1
if v=0 - cv= 1/√2 else cv=1

이거 c로 짜야되거든요ㅜㅜ 에러는 안나는데 if문에서 안도는것 같아요뒤에 프린트문이 출력이 안되요.
도와주세요!!
#include stdio.h
#include math.h
#define pi 3.14159265358979323846
main()
{
int input[8][8]={{70,72,70,70,72,68,68,64}, {103,101,103,100,99,97,94,94}, {132,132,132, 130,129,129,125,121},
{157,157,155,154,153,150,148,145}, {168,163,164,162,163,161,161,156}, {172,170,165,166,163,163,162,158},
{174,170,167,167,164,163,164,159}, {174,173,170,167,167,166,166,160}};
int output[8][8];
int a, b, t;
double e;
double c, d;
int x, y;

printf(===input image==========================\n\n);
for(a=0; a8; a++){
for(b=0; b8; b++)
printf(%5d,input[a][b]);
printf(\n);
}
for(a=0; a8; a++)
for(b=0; b8; b++){
input[a][b]=input[a][b]-128;
}
printf(\n\n===subtract 128==========================\n\n);
for(a=0; a8; a++){
for(b=0; b8; b++)
printf(%5d,input[a][b]);
printf(\n);
}
for(a=0; a8; a++){
for(b=0; b8; b++){
for(x=0; x8; x++){
for(y=0; y8; y++)
output[a][b]=input[x][y]*(int)cos(((2*x+1)*a*pi)/16)*(int)cos(((2*y+1)*b*pi)/16);}
}
}

for(a=0; a8; a++){
for(b=0; b8; b++){
if(a=0)
c=1/sqrt(2);
else if(b=0)
d=1/sqrt(2);
else{
c=1;
d=1;
}

output[a][b]=output[a][b]*(1/4)*c*d;
}

}

printf(\n\n===dct==========================\n\n);
for(a=0; a8; a++){
for(b=0; b8; b++)
printf(%5d,output[a][b]);
printf(\n);
}

}

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