根据电阻器上的颜色计算电阻

Question

#include<stdio.h>
#include<math.h>
#include<string.h>

int main(){

    int unos;
    char crna[20] = "crna";
    char braon[20] = "braon";
    char crvena[20] = "crvena";
    char narandzasta[20] ="narandzasta";
    char zuta[20] = "zuta";
    char zelena[20] = "zelena";
    char plava[20] = "plava";
    char ljubicasta[20] = "ljubicasta";
    char siva[20] = "siva";
    char bela[20] = "bela";
    char zlatna[20] = "zlatna";
    char srebrna[20] = "srebrna";

    puts("Unesite broj prstenova:");
    scanf("%i", &unos);

    if(unos == 5){

            int c1, c2, c3, m=0, t;
            char unos1[20] = "\0";
            int r;

            puts("Unesi boju 1. prstena:");
            scanf("%s",&unos1);

            if(strcmp(unos1, crna) == 0)
                c1 = 0;
            else if(strcmp(unos1, braon) == 0)
                c1 = 1;
            else if(strcmp(unos1, crvena) == 0)
                c1 = 2;
            else if(strcmp(unos1, narandzasta) == 0)
                c1 = 3;
            else if(strcmp(unos1, zuta) == 0)
                c1 = 4;
            else if(strcmp(unos1, zelena) == 0)
                c1 = 5;
            else if(strcmp(unos1, plava) == 0)
                c1 = 6;
            else if(strcmp(unos1, ljubicasta) == 0)
                c1 = 7;
            else if(strcmp(unos1, siva) == 0)
                c1 = 8;
            else if(strcmp(unos1, bela) == 0)
                c1 = 9;

            char unos2[20] = "\0";

            puts("Unesi boju 2. prstena:");
            scanf("%s", &unos2);

            if(strcmp(unos2, crna) == 0)
                c2 = 0;
            else if(strcmp(unos2, braon) == 0)
                c2 = 1;
            else if(strcmp(unos2, crvena) == 0)
                c2 = 2;
            else if(strcmp(unos2, narandzasta) == 0)
                c2 = 3;
            else if(strcmp(unos2, zuta) == 0)
                c2 = 4;
            else if(strcmp(unos2, zelena) == 0)
                c2 = 5;
            else if(strcmp(unos2, plava) == 0)
                c2 = 6;
            else if(strcmp(unos2, ljubicasta) == 0)
                c2 = 7;
            else if(strcmp(unos2, siva) == 0)
                c2 = 8;
            else if(strcmp(unos2, bela) == 0)
                c2 = 9;

            char unos3[20] = "\0";

            puts("Unesi boju 3. prstena:");
            scanf("%s", &unos3);

            if(strcmp(unos3, crna) == 0)
                c3 = 0;
            else if(strcmp(unos3, braon) == 0)
                c3 = 1;
            else if(strcmp(unos3, crvena) == 0)
                c3 = 2;
            else if(strcmp(unos3, narandzasta) == 0)
                c3 = 3;
            else if(strcmp(unos3, zuta) == 0)
                c3 = 4;
            else if(strcmp(unos3, zelena) == 0)
                c3 = 5;
            else if(strcmp(unos3, plava) == 0)
                c3 = 6;
            else if(strcmp(unos3, ljubicasta) == 0)
                c3 = 7;
            else if(strcmp(unos3, siva) == 0)
                c3 = 8;
            else if(strcmp(unos3, bela) == 0)
                c3 = 9;

            char mnoz[20] = "\0";
            puts("Unesi boju 4. prstena:");
            scanf("%s", &mnoz);

            if(strcmp(mnoz, crna) == 0)
                m = 1;
            else if(strcmp(mnoz, braon))
                m = 10;
            else if(strcmp(mnoz, crvena))
                m = 100;
            else if(strcmp(mnoz, narandzasta))
                m = 1000;
            else if(strcmp(mnoz, zuta))
                m = 10000;
            else if(strcmp(mnoz, zelena))
                m = 100000;
            else if(strcmp(mnoz, plava))
                m = 1000000;
            else if(strcmp(mnoz, ljubicasta))
                m = 10000000;
            else if(strcmp(mnoz, siva))
                m = 100000000;
            //else if(strcmp(mnoz, bela))
                //m = 10*10*10*10*10*10*10*10*10;
            else if(strcmp(mnoz, zlatna))
                m = 0.1;
            else if(strcmp(mnoz, srebrna))
                m = 0.01;

            r = ((c1*100)+(c2*10)+(c3*1)) * m;
            printf("%i,%i",m,r);

    }

    return 0;

}

所以一切都好，但是变量"m“总是10，如果我输入"narandzasta”，它会问"Unesi boju 4.prstena：“它应该是1000。如果需要，我可以将int和chars的名称翻译成英语。我是编程的初学者(我们刚刚开始学习字符串)。

Answer 1

您忘记了与0进行比较，以查看字符串是否相等：

 if(strcmp(mnoz, crna) == 0)
            m = 1;
        else if(strcmp(mnoz, braon) == 0)
            m = 10;
        else if(strcmp(mnoz, crvena) == 0)
            m = 100;
        else if(strcmp(mnoz, narandzasta) == 0)
            m = 1000;
        else if(strcmp(mnoz, zuta)==0)
            m = 10000;
        else if(strcmp(mnoz, zelena) == 0)
            m = 100000;
        else if(strcmp(mnoz, plava) == 0)
            m = 1000000;
        else if(strcmp(mnoz, ljubicasta) == 0)
            m = 10000000;
        else if(strcmp(mnoz, siva) == 0)
            m = 100000000;

您将m声明为int，并在最终使用时将其用作double，更正了您的代码：

#include<stdio.h>
#include<math.h>
#include<string.h>

int main(){

    int unos;
    char crna[20] = "crna";
    char braon[20] = "braon";
    char crvena[20] = "crvena";
    char narandzasta[20] ="narandzasta";
    char zuta[20] = "zuta";
    char zelena[20] = "zelena";
    char plava[20] = "plava";
    char ljubicasta[20] = "ljubicasta";
    char siva[20] = "siva";
    char bela[20] = "bela";
    char zlatna[20] = "zlatna";
    char srebrna[20] = "srebrna";

    puts("Unesite broj prstenova:");
    scanf("%i", &unos);

    if(unos == 5){

            int c1, c2, c3, t;
            double m=0;
            char unos1[20] = "\0";
            int r;

            puts("Unesi boju 1. prstena:");
            scanf("%s", unos1);

            if(strcmp(unos1, crna) == 0)
                c1 = 0;
            else if(strcmp(unos1, braon) == 0)
                c1 = 1;
            else if(strcmp(unos1, crvena) == 0)
                c1 = 2;
            else if(strcmp(unos1, narandzasta) == 0)
                c1 = 3;
            else if(strcmp(unos1, zuta) == 0)
                c1 = 4;
            else if(strcmp(unos1, zelena) == 0)
                c1 = 5;
            else if(strcmp(unos1, plava) == 0)
                c1 = 6;
            else if(strcmp(unos1, ljubicasta) == 0)
                c1 = 7;
            else if(strcmp(unos1, siva) == 0)
                c1 = 8;
            else if(strcmp(unos1, bela) == 0)
                c1 = 9;

            char unos2[20] = "\0";

            puts("Unesi boju 2. prstena:");
            scanf("%s", unos2);

            if(strcmp(unos2, crna) == 0)
                c2 = 0;
            else if(strcmp(unos2, braon) == 0)
                c2 = 1;
            else if(strcmp(unos2, crvena) == 0)
                c2 = 2;
            else if(strcmp(unos2, narandzasta) == 0)
                c2 = 3;
            else if(strcmp(unos2, zuta) == 0)
                c2 = 4;
            else if(strcmp(unos2, zelena) == 0)
                c2 = 5;
            else if(strcmp(unos2, plava) == 0)
                c2 = 6;
            else if(strcmp(unos2, ljubicasta) == 0)
                c2 = 7;
            else if(strcmp(unos2, siva) == 0)
                c2 = 8;
            else if(strcmp(unos2, bela) == 0)
                c2 = 9;

            char unos3[20] = "\0";

            puts("Unesi boju 3. prstena:");
            scanf("%s", unos3);

            if(strcmp(unos3, crna) == 0)
                c3 = 0;
            else if(strcmp(unos3, braon) == 0)
                c3 = 1;
            else if(strcmp(unos3, crvena) == 0)
                c3 = 2;
            else if(strcmp(unos3, narandzasta) == 0)
                c3 = 3;
            else if(strcmp(unos3, zuta) == 0)
                c3 = 4;
            else if(strcmp(unos3, zelena) == 0)
                c3 = 5;
            else if(strcmp(unos3, plava) == 0)
                c3 = 6;
            else if(strcmp(unos3, ljubicasta) == 0)
                c3 = 7;
            else if(strcmp(unos3, siva) == 0)
                c3 = 8;
            else if(strcmp(unos3, bela) == 0)
                c3 = 9;

            char mnoz[20] = "\0";
            puts("Unesi boju 4. prstena:");
            scanf("%s", mnoz);

            if(strcmp(mnoz, crna) == 0)
                m = 1;
            else if(strcmp(mnoz, braon) == 0)
                m = 10;
            else if(strcmp(mnoz, crvena) == 0)
                m = 100;
            else if(strcmp(mnoz, narandzasta) == 0)
                m = 1000;
            else if(strcmp(mnoz, zuta) == 0)
                m = 10000;
            else if(strcmp(mnoz, zelena) == 0)
                m = 100000;
            else if(strcmp(mnoz, plava) == 0)
                m = 1000000;
            else if(strcmp(mnoz, ljubicasta) == 0)
                m = 10000000;
            else if(strcmp(mnoz, siva) == 0)
                m = 100000000;
            //else if(strcmp(mnoz, bela))
                //m = 10*10*10*10*10*10*10*10*10;
            else if(strcmp(mnoz, zlatna))
                m = 0.1;
            else if(strcmp(mnoz, srebrna))
                m = 0.01;

            r = ((c1*100)+(c2*10)+(c3*1)) * m;
            printf("%lf,%i",m,r);

    }

    return 0;

}