c语言上机练习100题

ch=xx[i][j];\rxx[i][j]=xx[i][k];\rreadDat() xx|i][k]=ch;\r( )\rFILE *in; for(j=0;j<strl/2;j++)\rint i=0; (\rchar *p; ch=xx[i][j];\rxx[i][j]=xx[i][(strl+l)/2+j];\rin=fopen(\ in.dat\ A r\ ); xx [ i ] | (strl+1 )/2+j ]=ch;\rwhUe(i<20&&fgets(xx[i],80,in)!=NULL){ 1\rp=strchr(xx[i],\n'); 1\rif(p)*p=O; }\ri++ƒ