C程序输出结果未显示

Question

我是C编程的新手，所以我试图让用户使用switch语句计算某些东西，问题是结果没有显示在程序上，例如，如果我输入1并输入50 * 6.63，结果为空。

#include <stdio.h>
#include <stdlib.h>

int main()
{
    float Str;
    float bonusArmor;
    float Haste;
    float Crit;
    float Multi;
    float Vera;
    float Mas;
    float result;
    int option;
    printf("Press 1 for Strength\n");
    printf("Press 2 for Bonus Armor\n");
    printf("Press 3 for Haste\n");
    printf("Press 4 for Critical Strike\n");
    printf("Press 5 for Multistrike\n");
    printf("Press 6 for Versaility\n");
    printf("Press 7 for Mastery\n");
    scanf("%d", &option);


    switch(option){

        case 1:
            printf("Enter Strength:\n");
            scanf("%f", &Str);
            result = (6.63*Str);
            printf("Total is: ", result);
            break;

        case 2:
            printf("Enter Bonus Armor:\n");
            scanf("%f", &bonusArmor);
            result = 6.30*bonusArmor;
            printf("Total is: ", result);
            break;

        case 3:
            printf("Enter Haste:\n");
            scanf("%f", &Haste);
            result = 3.66*Haste;
            printf("Total is: ", result);
            break;

        case 4:
            printf("Enter Critical Strike:\n");
            scanf("%f", &Str);
            result = 3.57*Str;
            printf("Total is: ", result);
            break;

        case 5:
            printf("Enter Multistrike:\n");
            scanf("%f", &Str);
            result = 3.18*Str;
            printf("Total is: ", result);
            break;

        case 6:
            printf("Enter Versatility:\n");
            scanf("%f", &Vera);
            result = 2.63*Vera;
            printf("Total is: ", result);
            break;

        case 7:
            printf("Enter Mastery:\n");
            scanf("%f", &Mas);
            result = 2.49*Mas;
            printf("Total is: ", result);
            break;

        default:
            printf ("Invalid input");

    }

    return 0;
}

Answer 1

您需要打印浮点数，如：

printf("Result is: %.2f", result);

查看here了解更多信息

Answer 2

您必须指定转换规范才能打印值：

printf("float: %f\n", floatValue);

换行符可确保您在打印时显示输出。

#include <stdio.h>
#include <stdlib.h>

int main()
{
    float Str;
    float bonusArmor;
    float Haste;
    float Crit;
    float Multi;
    float Vera;
    float Mas;
    float result;
    int option = 0;
    printf("Press 1 for Strength\n");
    printf("Press 2 for Bonus Armor\n");
    printf("Press 3 for Haste\n");
    printf("Press 4 for Critical Strike\n");
    printf("Press 5 for Multistrike\n");
    printf("Press 6 for Versatility\n");
    printf("Press 7 for Mastery\n");
    scanf("%d", &option);

    switch(option){

        case 1:
            printf("Enter Strength:\n");
            scanf("%f", &Str);
            result = (6.63*Str);
            printf("Total is: %f\n", result);
            break;

        case 2:
            printf("Enter Bonus Armor:\n");
            scanf("%f", &bonusArmor);
            result = 6.30*bonusArmor;
            printf("Total is: %f\n", result);
            break;

        case 3:
            printf("Enter Haste:\n");
            scanf("%f", &Haste);
            result = 3.66*Haste;
            printf("Total is: %f\n", result);
            break;

        case 4:
            printf("Enter Critical Strike:\n");
            scanf("%f", &Str);
            result = 3.57*Str;
            printf("Total is: %f\n", result);
            break;

        case 5:
            printf("Enter Multistrike:\n");
            scanf("%f", &Str);
            result = 3.18*Str;
            printf("Total is: %f\n", result);
            break;

        case 6:
            printf("Enter Versatility:\n");
            scanf("%f", &Vera);
            result = 2.63*Vera;
            printf("Total is: %f\n", result);
            break;

        case 7:
            printf("Enter Mastery:\n");
            scanf("%f", &Mas);
            result = 2.49*Mas;
            printf("Total is: %f\n", result);
            break;

        default:
            printf("Invalid input\n");
            break;
    }

    return 0;
}