c - 从 char* 到 char 的无效转换

Question

我敢肯定这段代码会有比这更多的错误，但目前我遇到的唯一错误是从 char* 到 char 的无效转换。

完整代码

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

#define REPORTHEADING1 "     Employee              Pay      Hours     Gross     Tax       Net\n"
#define REPORTHEADING2 "     Name                  Rate     Worked    Pay       Due       Pay\n"
#define REPORTHEADING3 "     ===============       ====     ======    =====     ====      ====\n"
#define REPORTHEADING4 "                           ====     ======    =====     ====      ====\n"
#define REPORTLINEFORMAT1 "     %-20s%6.2f%11.2f%9.2f%9.2f%10.2f\n"
#define REPORTLINEFORMAT2 "     Totals              %6.2f%11.2f%9.2f%9.2f%10.2f\n"
#define REPORTLINEFORMAT3 "     Averages            %6.2f%11.2f%9.2f%9.2f%10.2f\n"

#define COUNTLINEFORMAT "     Number of employees: %-10i\n\n"

#define MAXREGHOURS 40
#define OVERTIMERATE 1.5

void PrintReportHeadings(FILE *reportFile); // printReportHeadings prototype

void InitializeAccumulators(float *totRegHour, float *totOvtHours, float *totPayrate,
        float *totGross, float *totdeferred, float *totFedtax,
        float *totStatetax, float *totSSItax, float *totNet, int *empCount); // InitializeAccumulators prototype

void InputEmployeeData(char *firstName, char *lastName,
            float *hours, float *payrate, float *deferred); // InputEmployeeData prototype

void CalculateGross(float hours, float payrate, float *regHours, float *ovtHours,
            float *gross); // CalculateGross prototype

extern void CalculateTaxes(float gross, float deferred, float * fedtax,
                float * statetax, float * ssitax); // CalculateTaxes prototype (external)

float CalculateNetPay(float gross, float fedtax, float statetax, float ssitax,
                float deferred);

void AddDetailToAccumulators(float regHours, float ovtHours, float payrate,
        float gross, float deferred, float fedtax, float statetax,
        float ssitax, float net, float *totRegHours, float *totOvtHours,
        float *totPayrate, float *totGross, float *totdeferred,
        float *totFedtax, float *totStatetax, float *totSSItax,
        float *totNet);

void PrintSummaryReport(FILE *reportFile, char fullName, float regHours, float ovtHours,
            float payrate, float gross, float deferred, float fedtax,
            float statetax, float ssitax, float net);

int main(void)
{
    float ft, st, ssit;
    char firstName[10+1];
    char lastName[15+1];
    char fullName[25+1];
    float regHours, ovtHours, hours, payrate, deferred, gross, netpay;
    float totRegHours, totOvtHours, totPayrate, totGross, totdeferred,
        totFedtax, totStatetax, totSSItax, totNet;
    int empcount;
    char answer;
    FILE * reportFile;

    reportFile = fopen("./report.txt", "wt");
    if(reportFile == NULL)
    {
        printf(" Report open request failed...\n");
        while(getchar() != '\n');
        exit(-90); // reqs <stdlib.h>
    }

    PrintReportHeadings(reportFile);

    InitializeAccumulators(&totRegHours, &totOvtHours, &totPayrate, &totGross,
        &totdeferred, &totFedtax, &totStatetax, &totSSItax, &totNet,
        &empcount); // Set all accumulators to 0

    do
    {
        InputEmployeeData(firstName, lastName, &hours, &payrate, &deferred);
        CalculateGross(hours, payrate, &regHours, &ovtHours, &gross);
        CalculateTaxes(gross, deferred, &ft, &st, &ssit);
        netpay = CalculateNetPay(gross, ft, st, ssit, deferred);
        strcpy(fullName, lastName);
        strcat(fullName, ", ");
        strcat(fullName, firstName);

        AddDetailToAccumulators(regHours, ovtHours, payrate, gross, deferred, ft, st,
            ssit, netpay, &totRegHours, &totOvtHours, &totPayrate, &totGross,
            &totdeferred, &totFedtax, &totStatetax, &totSSItax, &totNet);

        PrintSummaryReport(reportFile, fullName, regHours, ovtHours, payrate, gross, deferred, ft, st, ssit, netpay);

        empcount++;
        printf(COUNTLINEFORMAT, empcount);

        printf("  Do you have any more? (Y/N): ");
        while(getchar() != '\n')
            ;

        answer = getchar();
        printf("\n");
    }
    while(answer != 'N' && answer != 'n');

    while (getchar() != '\n')
        ;

    getchar();
    return 0;
}

void PrintReportHeadings(FILE *reportFile)
{
    reportFile = fopen("./report.txt", "wt");
    fprintf(reportFile, REPORTHEADING1);
    fprintf(reportFile, REPORTHEADING2);
    fprintf(reportFile, REPORTHEADING3);
}

void InitializeAccumulators(float *totRegHour, float *totOvtHours, float *totPayrate,
                float *totGross, float *totdeferred, float *totFedtax,
                float *totStatetax, float *totSSItax, float *totNet, int *empCount)
{
    totRegHour, totOvtHours, totPayrate, totGross, totdeferred,
        totFedtax, totStatetax, totSSItax, totNet, empCount = 0;
}

void InputEmployeeData(char *firstName, char *lastName, float *hours,
            float *payrate, float *deferred)
{
    printf("  Enter employee first name: ");
    scanf("%s", firstName);
    printf("  Enter employee last name: ");
    scanf("%s", lastName);
    printf("  Enter %s's hours worked: ", firstName);
    scanf("%f", hours);
    printf("  Enter %s's pay rate: ", firstName);
    scanf("%f", payrate);
    printf("  Enter %s's amount deferred: ", firstName);
    scanf("%f", deferred);
}

void CalculateGross(float hours, float payrate, float *regHours, float *ovtHours, float *gross)
{
    float overtimeHours(float hours);

    if(hours <= MAXREGHOURS)
    {
        *regHours = hours;
        *gross = hours * payrate;
    }
    else
    {
        *regHours = MAXREGHOURS;
        *ovtHours = overtimeHours(hours);
        *gross = payrate * MAXREGHOURS + OVERTIMERATE * payrate * (hours - MAXREGHOURS);
    }
}

float overtimeHours(float hours)
{
    return hours - MAXREGHOURS;
}
float CalculateNetPay(float gross, float fedtax, float statetax, float ssitax,
        float deferred)
{
    return gross - (fedtax + statetax + ssitax + deferred);
}

void AddDetailtoAccumulators(float regHours, float ovtHours, float payrate,
                float gross, float deferred, float fedtax, float statetax,
                float ssitax, float netpay, float *totRegHours, float *totOvtHours,
                float *totPayrate, float *totGross, float *totDeferred,
                float *totFedtax, float *totStatetax, float *totSSItax,
                float *totNet)
{
    *totRegHours =+ regHours;
    *totOvtHours =+ ovtHours;
    *totPayrate =+ payrate;
    *totGross =+ gross;
    *totDeferred =+ deferred;
    *totFedtax =+ fedtax;
    *totStatetax =+ statetax;
    *totSSItax =+ ssitax;
    *totNet =+ netpay;
}

void PrintSummaryReport(FILE *reportFile, char fullName, float regHours, float ovtHours,
                        float payrate, float gross, float deferred, float fedtax,
                        float statetax, float ssitax, float netpay)
{
    reportFile = fopen("./report.txt", "wt");

    fprintf(reportFile, REPORTLINEFORMAT1, fullName, payrate, regHours, gross, fedtax,
            ssitax, netpay);
    fprintf(reportFile, REPORTLINEFORMAT2, ovtHours, statetax, deferred);
}

发生错误的行:

PrintSummaryReport(reportFile, fullName, regHours, ovtHours, payrate, gross, deferred, ft, st, ssit, netpay);

Answer 1

我认为你的函数签名是错误的。您可能需要 char * fullname 而不是 char fullname。

void PrintSummaryReport(FILE *reportFile,char /* you probably want this to be a char * */ fullName,float regHours,float ovtHours,
        float payrate,float gross,float deferred,float fedtax,
        float statetax,float ssitax,float net);