这里是不是可以改成这样？
#include <stdio.h>int main(void){ int i,j,upp,low,dig,spa,oth; char text[3][80]; upp = low = dig = spa = oth = 0; for(i = 0; i < 3; i++) { printf("\n please input line %d:\n",i+1); gets(text[i]); for(j = 0; j < 80 && text[i][j] != '\0';j++) /* 这里能不能改成for(j = 0; text[i][j] != '\0';j++)*/ { if(text[i][j] >= 'A' && text[i][j] <= 'Z') upp++; else if(text[i][j] >= 'a' && text[i][j] <= 'z') low++; else if(text[i][j] >= '0' && text[i][j] <= '9') dig++; else if(text[i][j] == ' ') spa++; else oth++; } } for(i = 0; i < 3; i++) { printf("%s\n",text[i]); } printf("upper case: %d\n",upp); printf("lower case: %d\n",low); printf("digit: %d\n",dig); printf("space:%d\n",spa); printf("other:%d\n",oth); return 0;}