这个程序是为读取文件名并显示它们而设计的，但我有一个分段错误。我试图更改代码中的许多内容以使其正常工作，但结构NameRecords记录[150000]的数组似乎是我的问题。如果我将值更改为74000，代码将运行，但如果我增加到150000（我需要的数字），它将不会运行。这是我的代码：
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <math.h>
//structure for storing names in the files
struct NameRecord {
char name[31];
int year;
int frequency;
};
void allCaps(char a[]); //capitalizes all of the characters of s
int getRawData(FILE* fp, struct NameRecord records[], int currSize);//reads in files of the two csv files
void setYearTotals(struct NameRecord records[], int size, int yearRangeTotal[]);//calclulates the total population between the 4 year gap
void setNameYearTotals(char theName[], struct NameRecord records[], int size, int nameTotal[]); //stores the frequency for the names in a 4 year difference
void getPerHundredThousand(int nameTotal[], int yearRangeTotal[], double perHundredThousand[]);//gets the name frequency per hundred births for a given year range
void printData(double perHundredThousand[]);//print the frequency of the name per years
void graphPerHundredThousand(double perHundredThousand[]);//display the frequency in a graph like way
main () {
//declarations to be used to get data from user and run functions
int this=0,me,size;
int yearTotal[1000];
int range[150];
int nameTotal[150];
struct NameRecord records[150000];
char name[30];
char theName[150];
char answer;
double thousand[150];
FILE* fp;
do {
printf("Enter a name: ");
scanf("%[^n]",name);
allCaps(name);
me = getRawData(fp,records,this);
setYearTotals(records,me,yearTotal);
setNameYearTotals(theName,records,me,nameTotal);
getPerHundredThousand(nameTotal,range,thousand);
printData(thousand);
graphPerHundredThousand(thousand);
printf("Do you wish to check another name (Y/N): ");
scanf(" %c",&answer);
} while(answer!='n' && answer !='N');
}
void allCaps(char a[]) {
//uses toupper function in order to capitalize the entered string
int i;
for (i = 0; i < strlen(a); i++) {
a[i] = toupper(a[i]);
}
}
int getRawData(FILE* fp, struct NameRecord records[], int currSize) {
//reads the file names from both male and female records
int i, run =0,temp,j;
currSize=0;
do {
if (run==0) {
fp = fopen("malebabynames.csv", "r");
if(fp == NULL)
printf("File not found:"malebabynames.csv!"");
else {
while(fscanf(fp,"%d,%[^,],%d", &records[currSize].year, records[currSize].name, &records[currSize].frequency)!= -1) { //condition to continue reading until end of file is reached
currSize++;
}
fclose(fp);
}
run++;
} else if(run==1) {
fp = fopen("femalebabynames.csv", "r");//change to csv
if(fp == NULL)
printf("File not found:"femalebabynames.csv!"");
else {
while(fscanf(fp,"%d,%[^,],%d", &records[currSize].year, records[currSize].name, &records[currSize].frequency)!= -1) {
currSize++;
}
fclose(fp);
}
}
} while(run == 1); //continues till both files are read
//array to sort the file based on year
for(i=0; i < currSize; i++) {
for(j=0; j < currSize; j++) {
if (records[i].year > records[j].year) {
temp = records[i].year;
records[i].year = records[j].year;
records[j].year = temp;
}
}
}
return currSize;
}
void setYearTotals(struct NameRecord records[], int size, int yearRangeTotal[] ) {
//yearRangeTotal[0] holds the total population between 1921-1925. 4 year gap
int k,i,population=0,counter=0;
//loop to hold the frequency
for(k=0; k<size; k++){
for(i=0; i < 4; i++) {
population += records[counter].frequency; //equal to population every 4 years
counter++;
}
yearRangeTotal[k] = population;
population=0;
}
}
void setNameYearTotals(char theName[], struct NameRecord records[], int size, int nameTotal[]) {
// nameTotal[0]. stores the frequency for theName for a 4 year difference
int i,j,counter=0;
//checks for the name, stores in counter and continues checking
for(i = 0; i < size; i++) {
theName[i] = &records[i].name;
for(j = 0; j < 4; j++) {
if(theName[i] == &records[j].name)
counter++;
}
nameTotal[i] = counter;
counter=0;
}
}
void getPerHundredThousand(int nameTotal[], int yearRangeTotal[], double perHundredThousand[]) {
int i,j,k;
double keep;
//gets the name for the frequency of births for a given year period
for(i=0; i < 50; i++) {
keep = 10000* (nameTotal[i]/yearRangeTotal[i]);
perHundredThousand[i] = keep;
}
printData(perHundredThousand);
graphPerHundredThousand(perHundredThousand);
}
void printData(double perHundredThousand[]) {
//print the data starting from 1921 till 2010
int year = 1921,i;
printf("Frequency Per Hundred Thousand Birthsn");
printf("=====================================n");
for(i=0; i != ' '; i++) {
printf("%d - %d: %lfn",year,year+4,perHundredThousand[i]);
year+=4;
}
}
void graphPerHundredThousand(double perHundredThousand[]) {
int i,j,temp=0,year=2010;
double stars,k;
double base;
//sorts the array from 2010 to 1921 to get the smallest non-zero value
for(i=0; i != ' '; i++) {
for(j=0; j < ' '; j++) {
if (perHundredThousand[i] > perHundredThousand[j]) {
temp = perHundredThousand[i];
perHundredThousand[i] = perHundredThousand[j];
perHundredThousand[j] = temp;
}
}
}
base = perHundredThousand[0];
printf(" Graphn");
printf("=====================================n");
//calculates the stars needed in each year based on calculation of the smallest non-zero value calculated from upabove
for(i=0; i != ' '; i++) {
printf("%d - %d: %lfn",year,year-4);
stars=perHundredThousand[i]/base;
k = ceil(stars);
for(i=0; i < k; i++) {
if (k == 0)
break;
else {
printf("*");
}
}
year-=4;
}
}
您几乎肯定会溢出堆栈。通过将"records"数组作为main（）函数的预定义部分，您可以在堆栈上放置至少5850000字节的数据，这几乎肯定大于编译器/链接器/OS分配的默认堆栈大小。您有三个选项：1）使"records"数组全局化（这会将其放在更大的堆上），2）在运行时使用适当的内存分配函数分配"records）数组，或者3）找出如何让编译器使堆栈更大。