c語言求文件列數據rms平均值

#include <stdio.h>
#include <stdlib.h> 
#include <iostream>
int main(){
 
    char line[129600],stra[129600],strb[129600];                                  //存每行,存第1列字符串的值
	char str1[]={"B1UM"},str2[]={"B2UM"},str3[]={"B3UM"},str4[]={"B4UM"},str5[]={"B5UM"},str6[]={"B6UM"},str7[]={"B7UM"},str8[]={"B8UM"},str9[]={"B9UM"};
	float a;
	float s1=0,av1, s2=0,av2, s3=0,av3, s4=0,av4, s5=0,av5, s6=0,av6, s7=0,av7, s8=0,av8, s9=0,av9;
	float i1=0,i2=0,i3=0,i4=0,i5=0,i6=0,i7=0,i8=0,i9=0;

	FILE* file = fopen("0200-040_04270433U.14m.txt", "r");
	FILE *fpWrite=fopen("av.txt","w");

    while (fgets(line, sizeof(line), file)) {																	//fgets逐行讀取文件，到達文件尾終止while循環
        sscanf(line, "%s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %s", stra, strb);							//sscanf解析每行數據，因爲第*列不需要，在格式字符前加上*		
		sscanf(stra,"%f",&a);
		if (strcmp(strb,str1)==0) {s1=s1+a;i1++;}
		if (strcmp(strb,str2)==0) {s2=s2+a;i2++;}
		if (strcmp(strb,str3)==0) {s3=s3+a;i3++;}
		if (strcmp(strb,str4)==0) {s4=s4+a;i4++;}
		if (strcmp(strb,str5)==0) {s5=s5+a;i5++;}
		if (strcmp(strb,str6)==0) {s6=s6+a;i6++;}
		if (strcmp(strb,str7)==0) {s7=s7+a;i7++;}
		if (strcmp(strb,str8)==0) {s8=s8+a;i8++;}
		if (strcmp(strb,str9)==0) {s9=s9+a;i9++;}
	}
	printf("%f %f %f %f %f %f %f %f %f\n",i1,i2,i3,i4,i5,i6,i7,i8,i9);
	av1=s1/i1; av2=s2/i2;av3=s3/i3; av4=s4/i4;av5=s5/i5; av6=s6/i6;av7=s7/i7; av8=s8/i8; av9=s9/i9;
	printf("%s %f\n%s %f\n%s %f\n%s %f\n%s %f\n%s %f\n%s %f\n%s %f\n%s %f\n",str1,av1,str2,av2,str3,av3,str4,av4,str5,av5,str6,av6,str7,av7,str8,av8,str9,av9);
	fprintf(fpWrite,"%s %f\n%s %f\n%s %f\n%s %f\n%s %f\n%s %f\n%s %f\n%s %f\n%s %f\n",str1,av1,str2,av2,str3,av3,str4,av4,str5,av5,str6,av6,str7,av7,str8,av8,str9,av9);

	fclose(fpWrite);
    fclose(file);
	return -1;
}

參考文章：https://zhidao.baidu.com/question/616163517889503372.html

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