这个生成梯形波的c程序
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <math.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
uint8_t data[32]={32,64,96,128, 160,192,224,0xff, 0xff,0xff,0xff,0xff, 0xff,224,192,160, 128,96,64,32, 0,0,0,0, 0,0,0,0, 0,0,0,0};
int main(int argc, char *argv[]) {
FILE *fp;
uint32_t i;
if((fp=fopen("123.txt","wb+"))==NULL)
printf("file cannot open \n");
else
printf("file opened for writing \n");
for(i=0;i<=255;i++)
{
fputc(data[i%32],fp);
}
if(fclose(fp)!=0)
printf("file cannot be closed \n");
else
printf("file is now closed \n");
return 0;
}
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