如何使用C语言实现罗马数字转换成整数,以及整数转换成罗马数字答:include<stdio.h>#include<string.h>void main() { char str[20]; char d[10][20]={"I","II","III","IV","V","VI","VII","VIII","IX","X"}; int i,k; scanf("%s",str); for ( i=0,k=0;i<10;i++ ) if ( strcmp(str,d[i])==0 ) {k=i+1;break;...