#include #include int main(void) { char *data; long m,n; printf("Content-type:text/html\n\n"); printf(""); printf(""); printf("multi"); printf(""); printf(""); printf("

multi control

"); printf("
"); printf("

Direction:"); printf("

Step Number:"); printf("

"); printf(""); printf(""); printf("

"); printf("
"); printf(""); printf(""); data=getenv("QUERY_STRING"); if(!data) printf("

get no datas and it's wrong."); else if(sscanf(data,"m=%ld&n=%ld",&m,&n)!=2) printf("

the input must be numbers"); else printf("

%ld and %ld multi= %ld",m,n,m*n); return 0; }