100 lines
2.0 KiB
C
100 lines
2.0 KiB
C
#include <stdio.h>
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#include<string.h>
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#include<math.h>
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#include<stdlib.h>
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char* compactString(char *src,int leng) {
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char *new_str = (char*)calloc(leng+1,sizeof(char));
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int k=0;
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for(int i=0;i<leng;i++){
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if(src[i]!=' '){
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new_str[k] = src[i];
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k++;
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}
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}
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return new_str;
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}
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double operation(double first,double second,char c){
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double x =0;
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if(c=='*'){
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x=first*second;
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return x;
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}
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else if(c =='-'){
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x=first-second;
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return x;
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}
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else if(c=='/'){
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x=first/second;
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return x;
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}
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x= first+second;
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return x;
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}
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double round_to(double value, double eps)
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{
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return floor(value/eps + 0.5) * eps;
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}
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double compare_percent(double a, double b, double eps)
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{
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double diff = round_to( (a - b) * 2 / (a + b), eps);
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return diff < 0 ? -1 : diff > 0 ? +1 : 0;
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}
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int check(char *str){
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int flag=0;
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char symb[5]="*-+/=";
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for(int i =0;i<strlen(str);i++){
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for(int k =0;k<5;k++){
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for(int j =0;j<5;j++){
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if(str[i]==symb[j]&&str[i+1]==symb[k]){
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return 0;
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}
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}
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}
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if(str[i]=='='){
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flag=1;
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}
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if((str[i]>='a'&&str[i]<='z')||(str[i]>='A'&&str[i]<='Z')){
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return 0;
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}
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}
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return flag==1?1:0;
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}
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int main()
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{
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char str[100][100];
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for(int i =0;fgets(str[i],100,stdin);i++){
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if(str[i][0]=='\n'){
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break;
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}
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char *new_str = compactString(str[i],strlen(str[i]));
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double first =-5,second =-5,res=-5;
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char c='E';
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sscanf(new_str,"%lf%c%lf%*[=]%lf",&first,&c,&second,&res);
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if(c!=43&&c!=42&&c!=45&&c!=47||check(new_str)==0){
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printf("CHYBA\n");
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continue;
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}
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double my_res = operation(first,second,c);
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if(compare_percent(res,my_res,0.01)==0){
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printf("OK\n");
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}
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else{
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printf("ZLE\n");
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}
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}
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return 0;
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} |