58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#define SIZE_OF_ARRAY 100
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#define LINE_SIZE 2
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int main()
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{
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float result_of_main;
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float x,a,b,c;
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int result=reading_input(&x);
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if(result==0){
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printf("x");
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return 0;
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}
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result=reading_input(&a);
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if(result==0){
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printf("a");
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return 0;
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}
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result=reading_input(&b);
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if(result==0){
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printf("b");
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return 0;
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}
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result=reading_input(&c);
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if(result==0){
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printf("c");
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return 0;
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}
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result_of_main=a*(x*x)+b*x+c;
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printf("Vysledok je: %.2f", result_of_main);
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return 0;
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}
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int reading_input(float *number){
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char buffer[SIZE_OF_ARRAY];
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fgets(buffer,SIZE_OF_ARRAY,stdin);
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for(int j=0; buffer[j]!='\0'; j++){
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if (buffer[j]>='0'&&buffer[j]<='9') {
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continue;
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}
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if (buffer[j]=='.'||buffer) {
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continue;
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}
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if(buffer[j]=='\n'){
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buffer[j]='\0';
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break;
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}
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printf("You have entered wrong number.\n");
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return 0;
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}
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*number=atof(buffer);
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return 1;
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}
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